/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/seq-3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:51:15,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:51:15,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:51:15,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:51:15,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:51:15,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:51:15,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:51:15,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:51:15,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:51:15,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:51:15,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:51:15,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:51:15,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:51:15,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:51:15,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:51:15,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:51:15,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:51:15,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:51:15,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:51:15,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:51:15,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:51:15,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:51:15,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:51:15,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:51:15,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:51:15,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:51:15,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:51:15,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:51:15,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:51:15,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:51:15,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:51:15,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:51:15,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:51:15,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:51:15,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:51:15,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:51:15,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:51:15,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:51:15,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:51:15,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:51:15,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:51:15,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:51:15,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:51:15,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:51:15,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:51:15,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:51:15,311 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:51:15,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:51:15,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:51:15,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:51:15,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:51:15,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:51:15,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:51:15,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:51:15,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:51:15,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:51:15,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:51:15,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:51:15,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:51:15,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:51:15,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:51:15,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:51:15,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:51:15,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:51:15,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:51:15,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:51:15,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:51:15,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:51:15,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:51:15,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:51:15,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:51:15,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:51:15,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:51:15,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:51:15,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:51:15,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:51:15,667 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:51:15,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/seq-3.i [2020-10-13 10:51:15,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae53fa7f/3ff40a5ba8004558974bcf10d3bd0620/FLAGd0d2f3596 [2020-10-13 10:51:16,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:51:16,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/seq-3.i [2020-10-13 10:51:16,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae53fa7f/3ff40a5ba8004558974bcf10d3bd0620/FLAGd0d2f3596 [2020-10-13 10:51:16,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae53fa7f/3ff40a5ba8004558974bcf10d3bd0620 [2020-10-13 10:51:16,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:51:16,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:51:16,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:51:16,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:51:16,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:51:16,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9447a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16, skipping insertion in model container [2020-10-13 10:51:16,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:51:16,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:51:16,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:51:16,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:51:16,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:51:16,876 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:51:16,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16 WrapperNode [2020-10-13 10:51:16,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:51:16,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:51:16,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:51:16,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:51:16,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:16,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... [2020-10-13 10:51:17,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:51:17,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:51:17,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:51:17,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:51:17,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:51:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:51:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:51:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:51:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:51:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:51:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:51:17,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:51:17,306 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 10:51:17,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:51:17 BoogieIcfgContainer [2020-10-13 10:51:17,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:51:17,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:51:17,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:51:17,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:51:17,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:51:16" (1/3) ... [2020-10-13 10:51:17,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd7d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:51:17, skipping insertion in model container [2020-10-13 10:51:17,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:51:16" (2/3) ... [2020-10-13 10:51:17,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd7d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:51:17, skipping insertion in model container [2020-10-13 10:51:17,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:51:17" (3/3) ... [2020-10-13 10:51:17,319 INFO L109 eAbstractionObserver]: Analyzing ICFG seq-3.i [2020-10-13 10:51:17,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:51:17,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:51:17,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:51:17,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:51:17,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:51:17,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:51:17,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:51:17,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:51:17,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:51:17,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:51:17,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:51:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-13 10:51:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:51:17,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:17,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:17,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:17,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:17,468 INFO L82 PathProgramCache]: Analyzing trace with hash 721338375, now seen corresponding path program 1 times [2020-10-13 10:51:17,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:17,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827122730] [2020-10-13 10:51:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:17,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:17,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:17,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:51:17,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 10:51:17,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:51:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:17,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:51:17,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:51:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:17,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:17,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:17,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:17,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:51:17,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827122730] [2020-10-13 10:51:17,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:51:17,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:51:17,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495564454] [2020-10-13 10:51:17,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:51:17,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:17,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:51:17,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:51:17,949 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 7 states. [2020-10-13 10:51:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:18,160 INFO L93 Difference]: Finished difference Result 56 states and 81 transitions. [2020-10-13 10:51:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:51:18,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-13 10:51:18,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:18,173 INFO L225 Difference]: With dead ends: 56 [2020-10-13 10:51:18,173 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 10:51:18,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:51:18,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 10:51:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-10-13 10:51:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 10:51:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-13 10:51:18,218 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2020-10-13 10:51:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:18,218 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-13 10:51:18,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:51:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-13 10:51:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:51:18,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:18,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:18,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:51:18,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:18,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1230284105, now seen corresponding path program 1 times [2020-10-13 10:51:18,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:18,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852725020] [2020-10-13 10:51:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:18,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:18,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:51:18,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 10:51:18,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:51:18,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:18,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:18,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:18,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:51:18,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852725020] [2020-10-13 10:51:18,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:51:18,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:51:18,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609858571] [2020-10-13 10:51:18,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:51:18,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:18,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:51:18,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:51:18,417 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-10-13 10:51:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:18,481 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-13 10:51:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:51:18,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-13 10:51:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:18,484 INFO L225 Difference]: With dead ends: 35 [2020-10-13 10:51:18,484 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 10:51:18,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:51:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 10:51:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-13 10:51:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 10:51:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-13 10:51:18,505 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2020-10-13 10:51:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:18,505 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-13 10:51:18,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:51:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-13 10:51:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:51:18,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:18,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:18,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:51:18,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:18,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1577307176, now seen corresponding path program 1 times [2020-10-13 10:51:18,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:18,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308740530] [2020-10-13 10:51:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:18,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:18,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:51:18,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-13 10:51:18,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:51:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:51:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:18,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:18,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:51:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:18,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:18,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:18,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:51:18,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:51:18,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308740530] [2020-10-13 10:51:18,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:18,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:51:18,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933850138] [2020-10-13 10:51:18,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:51:18,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:18,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:51:18,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:51:18,788 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2020-10-13 10:51:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:18,968 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-13 10:51:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:51:18,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-13 10:51:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:18,972 INFO L225 Difference]: With dead ends: 51 [2020-10-13 10:51:18,972 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 10:51:18,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:51:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 10:51:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-13 10:51:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 10:51:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-13 10:51:18,982 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 24 [2020-10-13 10:51:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:18,982 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-13 10:51:18,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:51:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-13 10:51:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:51:18,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:18,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:18,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:51:18,984 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1925867353, now seen corresponding path program 1 times [2020-10-13 10:51:18,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:18,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432422709] [2020-10-13 10:51:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 10:51:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:51:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:51:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:19,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:51:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:51:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:51:19,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 10:51:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:51:19,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432422709] [2020-10-13 10:51:19,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:19,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:51:19,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484651585] [2020-10-13 10:51:19,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:51:19,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:19,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:51:19,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:51:19,221 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 9 states. [2020-10-13 10:51:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:19,407 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-13 10:51:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:51:19,408 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-13 10:51:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:19,409 INFO L225 Difference]: With dead ends: 61 [2020-10-13 10:51:19,410 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 10:51:19,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:51:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 10:51:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2020-10-13 10:51:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 10:51:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-13 10:51:19,420 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2020-10-13 10:51:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:19,420 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-13 10:51:19,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:51:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-13 10:51:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:51:19,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:19,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:19,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:51:19,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:19,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1753041192, now seen corresponding path program 2 times [2020-10-13 10:51:19,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:19,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028066922] [2020-10-13 10:51:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:51:19,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 10:51:19,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:51:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:51:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:51:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:19,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:51:19,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028066922] [2020-10-13 10:51:19,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:19,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:51:19,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831845700] [2020-10-13 10:51:19,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:51:19,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:19,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:51:19,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:51:19,573 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2020-10-13 10:51:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:19,638 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-13 10:51:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:51:19,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-13 10:51:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:19,640 INFO L225 Difference]: With dead ends: 45 [2020-10-13 10:51:19,640 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 10:51:19,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:51:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 10:51:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-13 10:51:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:51:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 10:51:19,649 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2020-10-13 10:51:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:19,649 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 10:51:19,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:51:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 10:51:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:51:19,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:19,651 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:19,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:51:19,651 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:19,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:19,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2104735975, now seen corresponding path program 3 times [2020-10-13 10:51:19,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:19,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138705164] [2020-10-13 10:51:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:51:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 10:51:19,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:51:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:51:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:19,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:19,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:51:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:51:19,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:51:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:19,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:51:19,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138705164] [2020-10-13 10:51:19,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:19,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:51:19,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678758912] [2020-10-13 10:51:19,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:51:19,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:19,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:51:19,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:19,935 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-13 10:51:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:20,178 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-10-13 10:51:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:51:20,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-13 10:51:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:20,180 INFO L225 Difference]: With dead ends: 68 [2020-10-13 10:51:20,180 INFO L226 Difference]: Without dead ends: 51 [2020-10-13 10:51:20,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-13 10:51:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2020-10-13 10:51:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:51:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-13 10:51:20,190 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2020-10-13 10:51:20,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:20,190 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-13 10:51:20,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:51:20,190 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-13 10:51:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:51:20,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:20,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:20,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:51:20,192 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash 34379366, now seen corresponding path program 1 times [2020-10-13 10:51:20,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:20,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982643344] [2020-10-13 10:51:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:51:20,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 10:51:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:51:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:51:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:20,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:20,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:51:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:20,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:20,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:51:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:20,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:51:20,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982643344] [2020-10-13 10:51:20,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:20,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:51:20,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323244312] [2020-10-13 10:51:20,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:51:20,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:20,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:51:20,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:20,419 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-10-13 10:51:20,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:20,642 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2020-10-13 10:51:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:51:20,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-13 10:51:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:20,644 INFO L225 Difference]: With dead ends: 79 [2020-10-13 10:51:20,644 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 10:51:20,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 10:51:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 40. [2020-10-13 10:51:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:51:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-13 10:51:20,654 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2020-10-13 10:51:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:20,654 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-13 10:51:20,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:51:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-13 10:51:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:51:20,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:20,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:20,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:51:20,656 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:20,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2110616313, now seen corresponding path program 2 times [2020-10-13 10:51:20,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:20,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959062257] [2020-10-13 10:51:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:51:20,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 10:51:20,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:51:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:51:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:20,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:20,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:51:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:20,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:51:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:20,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:20,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:20,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:51:20,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959062257] [2020-10-13 10:51:20,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:20,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:51:20,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909201364] [2020-10-13 10:51:20,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:51:20,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:20,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:51:20,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:20,873 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-10-13 10:51:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:21,097 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2020-10-13 10:51:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:51:21,098 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-13 10:51:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:21,099 INFO L225 Difference]: With dead ends: 92 [2020-10-13 10:51:21,099 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:51:21,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:51:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 42. [2020-10-13 10:51:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 10:51:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-13 10:51:21,110 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 32 [2020-10-13 10:51:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:21,110 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-13 10:51:21,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:51:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-13 10:51:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:51:21,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:21,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:21,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:51:21,112 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:21,112 INFO L82 PathProgramCache]: Analyzing trace with hash -713755753, now seen corresponding path program 4 times [2020-10-13 10:51:21,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:21,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837169121] [2020-10-13 10:51:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:51:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 10:51:21,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:51:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:51:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:21,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:21,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:21,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:21,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:51:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:21,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:51:21,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837169121] [2020-10-13 10:51:21,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:21,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:51:21,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578185144] [2020-10-13 10:51:21,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:51:21,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:21,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:51:21,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:51:21,293 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 8 states. [2020-10-13 10:51:21,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:21,372 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-10-13 10:51:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:51:21,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-13 10:51:21,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:21,373 INFO L225 Difference]: With dead ends: 55 [2020-10-13 10:51:21,373 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 10:51:21,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:51:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 10:51:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-13 10:51:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 10:51:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-13 10:51:21,381 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 33 [2020-10-13 10:51:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:21,381 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-13 10:51:21,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:51:21,381 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-13 10:51:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:51:21,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:21,383 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:21,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:51:21,383 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:21,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1388738376, now seen corresponding path program 5 times [2020-10-13 10:51:21,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:21,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067914421] [2020-10-13 10:51:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:51:21,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 10:51:21,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:51:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:21,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:51:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:21,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:21,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:21,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:51:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:21,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:21,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:51:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:51:21,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067914421] [2020-10-13 10:51:21,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:21,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:51:21,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830034838] [2020-10-13 10:51:21,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:51:21,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:51:21,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:51:21,690 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 13 states. [2020-10-13 10:51:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:21,948 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2020-10-13 10:51:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:51:21,949 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-13 10:51:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:21,950 INFO L225 Difference]: With dead ends: 85 [2020-10-13 10:51:21,950 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 10:51:21,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:51:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 10:51:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2020-10-13 10:51:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 10:51:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-13 10:51:21,960 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2020-10-13 10:51:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:21,960 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-13 10:51:21,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:51:21,960 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-13 10:51:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:51:21,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:21,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:21,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:51:21,962 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:21,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1629840839, now seen corresponding path program 2 times [2020-10-13 10:51:21,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:21,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030480042] [2020-10-13 10:51:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:51:22,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 10:51:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:51:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:51:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:22,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:22,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:22,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:51:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:22,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:22,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:51:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:22,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:22,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:51:22,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030480042] [2020-10-13 10:51:22,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:22,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:51:22,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273677509] [2020-10-13 10:51:22,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:51:22,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:22,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:51:22,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:51:22,257 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 13 states. [2020-10-13 10:51:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:22,611 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2020-10-13 10:51:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:51:22,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-13 10:51:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:22,613 INFO L225 Difference]: With dead ends: 100 [2020-10-13 10:51:22,613 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 10:51:22,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:51:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 10:51:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 50. [2020-10-13 10:51:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 10:51:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-13 10:51:22,623 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2020-10-13 10:51:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:22,623 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-13 10:51:22,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:51:22,623 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-13 10:51:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:51:22,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:22,624 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:22,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:51:22,625 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash -302044312, now seen corresponding path program 3 times [2020-10-13 10:51:22,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:22,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94096906] [2020-10-13 10:51:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:51:22,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 10:51:22,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:51:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:51:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:22,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:22,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:51:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:22,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:22,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:51:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:22,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:22,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:22,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:22,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:22,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:22,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:51:22,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94096906] [2020-10-13 10:51:22,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:22,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:51:22,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701876286] [2020-10-13 10:51:22,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:51:22,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:22,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:51:22,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:51:22,870 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 13 states. [2020-10-13 10:51:23,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:23,220 INFO L93 Difference]: Finished difference Result 114 states and 138 transitions. [2020-10-13 10:51:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:51:23,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-13 10:51:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:23,223 INFO L225 Difference]: With dead ends: 114 [2020-10-13 10:51:23,223 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 10:51:23,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:51:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 10:51:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 50. [2020-10-13 10:51:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 10:51:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-13 10:51:23,234 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2020-10-13 10:51:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:23,234 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-13 10:51:23,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:51:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-13 10:51:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:51:23,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:23,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:23,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:51:23,236 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1611289177, now seen corresponding path program 3 times [2020-10-13 10:51:23,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:23,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79697162] [2020-10-13 10:51:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:23,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:23,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:51:23,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 10:51:23,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:51:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:51:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:23,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:23,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:23,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:23,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:23,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:23,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:23,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:51:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:23,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:23,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:23,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:23,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:51:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:23,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:23,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:23,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:23,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:51:23,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79697162] [2020-10-13 10:51:23,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:23,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:51:23,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019012264] [2020-10-13 10:51:23,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:51:23,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:23,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:51:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:51:23,534 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 13 states. [2020-10-13 10:51:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:23,861 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2020-10-13 10:51:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:51:23,862 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-13 10:51:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:23,864 INFO L225 Difference]: With dead ends: 130 [2020-10-13 10:51:23,864 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 10:51:23,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:51:23,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 10:51:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 52. [2020-10-13 10:51:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-13 10:51:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-10-13 10:51:23,889 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 40 [2020-10-13 10:51:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:23,889 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-10-13 10:51:23,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:51:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-10-13 10:51:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:51:23,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:23,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:23,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:51:23,892 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:23,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1980104200, now seen corresponding path program 6 times [2020-10-13 10:51:23,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:23,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219615052] [2020-10-13 10:51:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:51:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 10:51:24,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:51:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:51:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:24,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:24,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:24,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:51:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:24,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:24,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:24,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:24,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:24,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:51:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:24,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:24,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:51:24,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219615052] [2020-10-13 10:51:24,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:24,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:51:24,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375683540] [2020-10-13 10:51:24,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:51:24,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:24,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:51:24,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:51:24,150 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 9 states. [2020-10-13 10:51:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:24,238 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-10-13 10:51:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:51:24,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-13 10:51:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:24,239 INFO L225 Difference]: With dead ends: 65 [2020-10-13 10:51:24,239 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 10:51:24,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:51:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 10:51:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-13 10:51:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 10:51:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-13 10:51:24,249 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 41 [2020-10-13 10:51:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:24,249 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-13 10:51:24,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:51:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-13 10:51:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:51:24,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:24,250 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:24,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:51:24,251 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:24,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:24,251 INFO L82 PathProgramCache]: Analyzing trace with hash 459778503, now seen corresponding path program 7 times [2020-10-13 10:51:24,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:24,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987314053] [2020-10-13 10:51:24,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:51:24,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 10:51:24,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:51:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:51:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:24,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:24,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:24,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:51:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:24,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:24,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:24,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:24,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:51:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:24,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:24,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:24,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:24,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 10:51:24,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987314053] [2020-10-13 10:51:24,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:24,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:51:24,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314780245] [2020-10-13 10:51:24,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:51:24,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:24,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:51:24,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:51:24,680 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 15 states. [2020-10-13 10:51:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:25,041 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2020-10-13 10:51:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:51:25,042 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-13 10:51:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:25,043 INFO L225 Difference]: With dead ends: 102 [2020-10-13 10:51:25,043 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 10:51:25,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:51:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 10:51:25,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2020-10-13 10:51:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:51:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-13 10:51:25,062 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2020-10-13 10:51:25,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:25,063 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-13 10:51:25,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:51:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-13 10:51:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:51:25,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:25,064 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:25,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:51:25,064 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:25,065 INFO L82 PathProgramCache]: Analyzing trace with hash 418097478, now seen corresponding path program 4 times [2020-10-13 10:51:25,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:25,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988193129] [2020-10-13 10:51:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:25,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:25,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:51:25,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-13 10:51:25,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:51:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:51:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:25,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:25,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:25,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:25,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:25,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:51:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:25,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:25,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:25,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:25,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:25,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:51:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:25,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:25,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:25,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:25,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:25,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:25,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 10:51:25,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988193129] [2020-10-13 10:51:25,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:25,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:51:25,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731546986] [2020-10-13 10:51:25,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:51:25,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:25,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:51:25,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:51:25,497 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 15 states. [2020-10-13 10:51:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:25,897 INFO L93 Difference]: Finished difference Result 121 states and 144 transitions. [2020-10-13 10:51:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:51:25,899 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-13 10:51:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:25,900 INFO L225 Difference]: With dead ends: 121 [2020-10-13 10:51:25,901 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 10:51:25,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:51:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 10:51:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 60. [2020-10-13 10:51:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:51:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-13 10:51:25,914 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2020-10-13 10:51:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:25,915 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-13 10:51:25,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:51:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-13 10:51:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:51:25,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:25,916 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:25,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:51:25,916 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:25,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1522909721, now seen corresponding path program 5 times [2020-10-13 10:51:25,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:25,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298685731] [2020-10-13 10:51:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:51:26,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 10:51:26,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:51:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:51:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:26,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:51:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:51:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:26,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 10:51:26,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298685731] [2020-10-13 10:51:26,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:26,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:51:26,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507164953] [2020-10-13 10:51:26,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:51:26,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:26,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:51:26,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:51:26,276 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 15 states. [2020-10-13 10:51:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:26,691 INFO L93 Difference]: Finished difference Result 139 states and 168 transitions. [2020-10-13 10:51:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:51:26,692 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-13 10:51:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:26,694 INFO L225 Difference]: With dead ends: 139 [2020-10-13 10:51:26,694 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 10:51:26,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:51:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 10:51:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 60. [2020-10-13 10:51:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:51:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-13 10:51:26,708 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2020-10-13 10:51:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:26,708 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-13 10:51:26,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:51:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-13 10:51:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:51:26,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:26,709 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:26,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:51:26,710 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:26,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1046876454, now seen corresponding path program 6 times [2020-10-13 10:51:26,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:26,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557099611] [2020-10-13 10:51:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:51:26,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 10:51:26,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:51:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:51:26,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:26,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:51:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:51:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 10:51:27,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557099611] [2020-10-13 10:51:27,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:27,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:51:27,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180540102] [2020-10-13 10:51:27,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:51:27,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:27,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:51:27,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:51:27,005 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 15 states. [2020-10-13 10:51:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:27,447 INFO L93 Difference]: Finished difference Result 156 states and 191 transitions. [2020-10-13 10:51:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:51:27,448 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-13 10:51:27,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:27,451 INFO L225 Difference]: With dead ends: 156 [2020-10-13 10:51:27,451 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 10:51:27,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:51:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 10:51:27,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 60. [2020-10-13 10:51:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:51:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-13 10:51:27,468 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 48 [2020-10-13 10:51:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:27,468 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-13 10:51:27,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:51:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-13 10:51:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:51:27,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:27,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:27,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:51:27,470 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1961056775, now seen corresponding path program 4 times [2020-10-13 10:51:27,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:27,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675001855] [2020-10-13 10:51:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:27,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:27,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:51:27,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 10:51:27,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:51:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:51:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:27,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:27,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:27,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:51:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:51:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:27,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:27,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:27,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:27,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:27,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:27,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:27,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:27,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:27,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:51:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:27,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:27,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:27,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:27,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:27,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:27,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:27,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 10:51:27,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675001855] [2020-10-13 10:51:27,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:27,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:51:27,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927716647] [2020-10-13 10:51:27,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:51:27,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:27,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:51:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:51:27,837 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 15 states. [2020-10-13 10:51:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:28,211 INFO L93 Difference]: Finished difference Result 175 states and 217 transitions. [2020-10-13 10:51:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:51:28,213 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-13 10:51:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:28,215 INFO L225 Difference]: With dead ends: 175 [2020-10-13 10:51:28,215 INFO L226 Difference]: Without dead ends: 152 [2020-10-13 10:51:28,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:51:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-13 10:51:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 62. [2020-10-13 10:51:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 10:51:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-10-13 10:51:28,239 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 48 [2020-10-13 10:51:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:28,239 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-10-13 10:51:28,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:51:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-10-13 10:51:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:51:28,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:28,240 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:28,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:51:28,240 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:28,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1115522167, now seen corresponding path program 8 times [2020-10-13 10:51:28,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:28,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303960581] [2020-10-13 10:51:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:28,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:28,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:51:28,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 10:51:28,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:51:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:51:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:28,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:28,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:28,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:28,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:28,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:51:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:28,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:28,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:28,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:28,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:28,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:51:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:28,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:28,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:28,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:28,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:28,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:51:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:28,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:28,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:28,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:51:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:28,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:28,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:28,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:28,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:28,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:28,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 10:51:28,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303960581] [2020-10-13 10:51:28,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:28,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:51:28,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607018465] [2020-10-13 10:51:28,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:51:28,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:28,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:51:28,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:51:28,538 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 10 states. [2020-10-13 10:51:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:28,631 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-10-13 10:51:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:51:28,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-13 10:51:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:28,633 INFO L225 Difference]: With dead ends: 75 [2020-10-13 10:51:28,634 INFO L226 Difference]: Without dead ends: 73 [2020-10-13 10:51:28,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-13 10:51:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-10-13 10:51:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 10:51:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-13 10:51:28,643 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 49 [2020-10-13 10:51:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:28,644 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-13 10:51:28,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:51:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-13 10:51:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:51:28,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:28,646 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:28,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:51:28,646 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash 990063208, now seen corresponding path program 9 times [2020-10-13 10:51:28,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:28,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379167146] [2020-10-13 10:51:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:28,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:51:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-13 10:51:28,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:51:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:51:28,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:29,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:29,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:29,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:51:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:29,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:51:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:29,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:51:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:29,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:51:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:51:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:51:29,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379167146] [2020-10-13 10:51:29,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:29,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:51:29,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130654474] [2020-10-13 10:51:29,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:51:29,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:29,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:51:29,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:51:29,102 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 17 states. [2020-10-13 10:51:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:29,475 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2020-10-13 10:51:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:51:29,476 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-13 10:51:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:29,477 INFO L225 Difference]: With dead ends: 119 [2020-10-13 10:51:29,478 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 10:51:29,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:51:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 10:51:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70. [2020-10-13 10:51:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 10:51:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-10-13 10:51:29,491 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2020-10-13 10:51:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:29,491 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-10-13 10:51:29,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:51:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-10-13 10:51:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:51:29,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:29,495 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:29,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:51:29,496 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:29,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:29,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1106560281, now seen corresponding path program 7 times [2020-10-13 10:51:29,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:29,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314355545] [2020-10-13 10:51:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:51:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 10:51:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:51:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:51:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:29,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:29,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:51:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:51:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:29,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:51:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:29,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:51:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:29,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:51:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:29,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:29,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:29,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:29,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:29,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:29,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:29,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:29,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:51:29,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314355545] [2020-10-13 10:51:29,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:29,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:51:29,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596742794] [2020-10-13 10:51:29,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:51:29,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:29,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:51:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:51:29,949 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 17 states. [2020-10-13 10:51:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:30,406 INFO L93 Difference]: Finished difference Result 142 states and 169 transitions. [2020-10-13 10:51:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:51:30,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-13 10:51:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:30,411 INFO L225 Difference]: With dead ends: 142 [2020-10-13 10:51:30,411 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 10:51:30,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=970, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:51:30,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 10:51:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 70. [2020-10-13 10:51:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 10:51:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-10-13 10:51:30,427 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2020-10-13 10:51:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:30,428 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-10-13 10:51:30,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:51:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-10-13 10:51:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:51:30,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:30,433 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:30,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:51:30,433 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:30,434 INFO L82 PathProgramCache]: Analyzing trace with hash -342909304, now seen corresponding path program 8 times [2020-10-13 10:51:30,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:30,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35734413] [2020-10-13 10:51:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:30,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:51:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 10:51:30,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:51:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:51:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:30,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:30,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:30,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:30,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:30,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:51:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:30,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:30,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:30,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:51:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:30,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:30,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:30,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:30,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:30,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:30,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:51:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:30,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:30,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:30,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:30,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:30,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:51:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:30,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:30,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:30,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:30,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:30,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:30,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:51:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:30,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:30,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:30,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:51:30,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:51:30,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35734413] [2020-10-13 10:51:30,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:30,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:51:30,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101384149] [2020-10-13 10:51:30,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:51:30,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:51:30,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:51:30,936 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 17 states. [2020-10-13 10:51:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:31,511 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2020-10-13 10:51:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:51:31,511 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-13 10:51:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:31,512 INFO L225 Difference]: With dead ends: 164 [2020-10-13 10:51:31,513 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 10:51:31,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 10:51:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 10:51:31,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 70. [2020-10-13 10:51:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 10:51:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-10-13 10:51:31,529 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2020-10-13 10:51:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:31,530 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-10-13 10:51:31,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:51:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-10-13 10:51:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:51:31,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:31,531 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:31,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:51:31,531 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:31,532 INFO L82 PathProgramCache]: Analyzing trace with hash 235913927, now seen corresponding path program 9 times [2020-10-13 10:51:31,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:31,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834746703] [2020-10-13 10:51:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:31,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:31,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:31,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:51:31,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 10:51:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:51:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:51:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:31,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:51:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:31,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:51:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:31,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:31,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:31,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:31,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:51:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:31,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:31,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:31,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:51:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:31,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:31,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:31,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:31,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:31,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:31,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:51:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:31,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:31,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:31,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:31,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:31,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:51:31,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834746703] [2020-10-13 10:51:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:31,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:51:31,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677116903] [2020-10-13 10:51:31,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:51:31,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:31,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:51:31,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:51:31,953 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 17 states. [2020-10-13 10:51:32,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:32,541 INFO L93 Difference]: Finished difference Result 185 states and 226 transitions. [2020-10-13 10:51:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:51:32,542 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-13 10:51:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:32,543 INFO L225 Difference]: With dead ends: 185 [2020-10-13 10:51:32,543 INFO L226 Difference]: Without dead ends: 159 [2020-10-13 10:51:32,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:51:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-13 10:51:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 70. [2020-10-13 10:51:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 10:51:32,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-10-13 10:51:32,557 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2020-10-13 10:51:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:32,557 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-10-13 10:51:32,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:51:32,557 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-10-13 10:51:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:51:32,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:32,558 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:32,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:51:32,561 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:32,561 INFO L82 PathProgramCache]: Analyzing trace with hash 116038312, now seen corresponding path program 10 times [2020-10-13 10:51:32,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:32,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947017858] [2020-10-13 10:51:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:32,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:32,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:32,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:51:32,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 10:51:32,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:51:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:51:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:32,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:32,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:32,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:32,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:51:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:32,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:51:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:32,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:32,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:51:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:32,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:32,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:32,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:32,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:32,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:51:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:32,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:32,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:32,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:32,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:32,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:32,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:32,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:51:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:32,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:32,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:32,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:51:32,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947017858] [2020-10-13 10:51:32,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:32,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:51:32,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895095960] [2020-10-13 10:51:32,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:51:32,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:32,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:51:32,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:51:32,950 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 17 states. [2020-10-13 10:51:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:33,507 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2020-10-13 10:51:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:51:33,508 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-13 10:51:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:33,509 INFO L225 Difference]: With dead ends: 205 [2020-10-13 10:51:33,509 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 10:51:33,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 10:51:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 10:51:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 70. [2020-10-13 10:51:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 10:51:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-10-13 10:51:33,523 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 56 [2020-10-13 10:51:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:33,523 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-10-13 10:51:33,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:51:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-10-13 10:51:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:51:33,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:33,524 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:33,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:51:33,524 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:33,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:33,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1688943961, now seen corresponding path program 5 times [2020-10-13 10:51:33,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:33,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371124596] [2020-10-13 10:51:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:33,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:33,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:33,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:51:33,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 10:51:33,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:51:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:33,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:51:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:33,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:33,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:33,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:33,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:51:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:33,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:33,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:33,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:33,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:33,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:51:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:33,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:33,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:33,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:33,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:33,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:33,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:33,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:51:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:33,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:33,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:33,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:33,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:33,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:33,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:51:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:33,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:33,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:33,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:33,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:33,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:33,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:51:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:33,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:33,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:33,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:33,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:33,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:51:33,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371124596] [2020-10-13 10:51:33,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:33,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:51:33,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492955775] [2020-10-13 10:51:33,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:51:33,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:33,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:51:33,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:51:33,871 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 17 states. [2020-10-13 10:51:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:34,381 INFO L93 Difference]: Finished difference Result 227 states and 283 transitions. [2020-10-13 10:51:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:51:34,382 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-13 10:51:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:34,385 INFO L225 Difference]: With dead ends: 227 [2020-10-13 10:51:34,385 INFO L226 Difference]: Without dead ends: 201 [2020-10-13 10:51:34,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=966, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:51:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-13 10:51:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 72. [2020-10-13 10:51:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:51:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-10-13 10:51:34,401 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 56 [2020-10-13 10:51:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:34,401 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-10-13 10:51:34,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:51:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-10-13 10:51:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:51:34,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:34,403 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:34,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:51:34,403 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1297394408, now seen corresponding path program 10 times [2020-10-13 10:51:34,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:34,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699767815] [2020-10-13 10:51:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:51:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 10:51:34,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:51:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 10:51:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:34,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:34,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:34,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:34,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:34,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:34,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:34,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:34,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:34,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:34,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:34,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:34,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:34,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:34,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:34,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:34,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:34,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:34,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:34,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:34,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:34,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:34,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:34,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:34,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:34,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:51:34,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699767815] [2020-10-13 10:51:34,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:34,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:51:34,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820046919] [2020-10-13 10:51:34,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:51:34,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:34,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:51:34,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:34,713 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 11 states. [2020-10-13 10:51:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:34,844 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-13 10:51:34,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:51:34,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 10:51:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:34,846 INFO L225 Difference]: With dead ends: 82 [2020-10-13 10:51:34,846 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 10:51:34,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:51:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 10:51:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 10:51:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 10:51:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-10-13 10:51:34,856 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 57 [2020-10-13 10:51:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:34,857 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-10-13 10:51:34,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:51:34,857 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-10-13 10:51:34,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:51:34,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:34,858 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:34,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:51:34,858 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:34,859 INFO L82 PathProgramCache]: Analyzing trace with hash -146238809, now seen corresponding path program 11 times [2020-10-13 10:51:34,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:34,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629195827] [2020-10-13 10:51:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:51:35,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-13 10:51:35,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:51:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:51:35,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:35,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:35,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:35,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:35,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:35,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:35,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:35,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:35,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:35,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:51:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:35,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:35,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:35,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629195827] [2020-10-13 10:51:35,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:35,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:51:35,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877051404] [2020-10-13 10:51:35,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:51:35,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:35,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:51:35,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:35,338 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 19 states. [2020-10-13 10:51:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:35,824 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2020-10-13 10:51:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:51:35,825 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-13 10:51:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:35,825 INFO L225 Difference]: With dead ends: 136 [2020-10-13 10:51:35,826 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 10:51:35,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 10:51:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 10:51:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2020-10-13 10:51:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:51:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-13 10:51:35,841 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2020-10-13 10:51:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:35,841 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-13 10:51:35,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:51:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-13 10:51:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:51:35,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:35,842 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:35,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:51:35,843 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:35,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:35,843 INFO L82 PathProgramCache]: Analyzing trace with hash -952912858, now seen corresponding path program 11 times [2020-10-13 10:51:35,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:35,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629554373] [2020-10-13 10:51:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:51:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 10:51:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:51:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:51:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:36,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:36,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:36,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:36,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:36,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:36,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:36,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:36,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:36,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:51:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:36,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:36,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:36,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:36,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:36,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629554373] [2020-10-13 10:51:36,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:36,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:51:36,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595488962] [2020-10-13 10:51:36,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:51:36,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:36,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:51:36,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:36,285 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 19 states. [2020-10-13 10:51:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:36,907 INFO L93 Difference]: Finished difference Result 163 states and 194 transitions. [2020-10-13 10:51:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:51:36,908 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-13 10:51:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:36,909 INFO L225 Difference]: With dead ends: 163 [2020-10-13 10:51:36,909 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 10:51:36,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 10:51:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 10:51:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 80. [2020-10-13 10:51:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:51:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-13 10:51:36,924 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2020-10-13 10:51:36,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:36,924 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-13 10:51:36,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:51:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-13 10:51:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:51:36,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:36,925 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:36,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:51:36,925 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:36,925 INFO L82 PathProgramCache]: Analyzing trace with hash -424745273, now seen corresponding path program 12 times [2020-10-13 10:51:36,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:36,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918470673] [2020-10-13 10:51:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:36,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:51:37,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 10:51:37,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:51:37,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:51:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:37,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:37,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:37,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:37,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:37,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-13 10:51:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:37,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:37,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:37,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:37,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:37,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:37,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:37,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:51:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:37,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:37,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918470673] [2020-10-13 10:51:37,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:37,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:51:37,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373598977] [2020-10-13 10:51:37,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:51:37,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:37,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:51:37,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:37,438 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 19 states. [2020-10-13 10:51:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:38,125 INFO L93 Difference]: Finished difference Result 189 states and 228 transitions. [2020-10-13 10:51:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 10:51:38,127 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-13 10:51:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:38,128 INFO L225 Difference]: With dead ends: 189 [2020-10-13 10:51:38,128 INFO L226 Difference]: Without dead ends: 160 [2020-10-13 10:51:38,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=432, Invalid=1548, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 10:51:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-13 10:51:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 80. [2020-10-13 10:51:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:51:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-13 10:51:38,141 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2020-10-13 10:51:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:38,142 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-13 10:51:38,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:51:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-13 10:51:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:51:38,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:38,143 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:38,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:51:38,143 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:38,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1516086266, now seen corresponding path program 13 times [2020-10-13 10:51:38,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:38,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107434425] [2020-10-13 10:51:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:51:38,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 10:51:38,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:51:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:51:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:38,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:38,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:38,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:38,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:38,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:38,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:38,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:38,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:38,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:38,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:38,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:38,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:38,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:51:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:38,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:38,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:38,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:38,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 69 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:38,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107434425] [2020-10-13 10:51:38,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:38,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:51:38,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592056811] [2020-10-13 10:51:38,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:51:38,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:38,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:51:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:38,618 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 19 states. [2020-10-13 10:51:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:39,370 INFO L93 Difference]: Finished difference Result 214 states and 261 transitions. [2020-10-13 10:51:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 10:51:39,370 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-13 10:51:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:39,372 INFO L225 Difference]: With dead ends: 214 [2020-10-13 10:51:39,372 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 10:51:39,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1694, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 10:51:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 10:51:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 80. [2020-10-13 10:51:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:51:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-13 10:51:39,389 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2020-10-13 10:51:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:39,390 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-13 10:51:39,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:51:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-13 10:51:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:51:39,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:39,391 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:39,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:51:39,391 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:39,392 INFO L82 PathProgramCache]: Analyzing trace with hash -304364825, now seen corresponding path program 14 times [2020-10-13 10:51:39,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:39,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709102523] [2020-10-13 10:51:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:51:39,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 10:51:39,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:51:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:51:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:39,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:39,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:39,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:39,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:39,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:39,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:39,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:51:39,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:39,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:39,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:39,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:39,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:39,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:39,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:39,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:39,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:51:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:39,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:39,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:39,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709102523] [2020-10-13 10:51:39,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:39,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:51:39,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609738937] [2020-10-13 10:51:39,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:51:39,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:39,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:51:39,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:39,833 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 19 states. [2020-10-13 10:51:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:40,556 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2020-10-13 10:51:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 10:51:40,557 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-13 10:51:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:40,558 INFO L225 Difference]: With dead ends: 238 [2020-10-13 10:51:40,559 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 10:51:40,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=469, Invalid=1693, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 10:51:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 10:51:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 80. [2020-10-13 10:51:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:51:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-13 10:51:40,576 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2020-10-13 10:51:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:40,577 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-13 10:51:40,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:51:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-13 10:51:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:51:40,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:40,577 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:40,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:51:40,578 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1789297690, now seen corresponding path program 15 times [2020-10-13 10:51:40,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:40,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057744297] [2020-10-13 10:51:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:40,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:40,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:51:40,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 10:51:40,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:51:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:40,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:51:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:40,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:40,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:40,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:40,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:40,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:40,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:40,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:40,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:40,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:40,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:40,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:40,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:40,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:40,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:40,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:40,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:40,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:40,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:40,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:40,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:40,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:40,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:40,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:51:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:41,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:41,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:41,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:41,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:41,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:41,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:41,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:41,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 69 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:41,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057744297] [2020-10-13 10:51:41,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:41,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:51:41,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760747644] [2020-10-13 10:51:41,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:51:41,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:41,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:51:41,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:41,012 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 19 states. [2020-10-13 10:51:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:41,683 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2020-10-13 10:51:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 10:51:41,684 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-13 10:51:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:41,685 INFO L225 Difference]: With dead ends: 261 [2020-10-13 10:51:41,685 INFO L226 Difference]: Without dead ends: 232 [2020-10-13 10:51:41,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=1545, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 10:51:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-13 10:51:41,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 80. [2020-10-13 10:51:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:51:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-13 10:51:41,712 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 64 [2020-10-13 10:51:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:41,713 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-13 10:51:41,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:51:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-13 10:51:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:51:41,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:41,714 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:41,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:51:41,714 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash -590272761, now seen corresponding path program 6 times [2020-10-13 10:51:41,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:41,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853327592] [2020-10-13 10:51:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:41,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:41,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:51:41,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 10:51:41,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:51:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:41,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:51:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:42,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:42,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:42,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:42,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:42,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:42,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:42,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:51:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:42,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:42,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:42,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:42,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:42,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:42,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:42,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:42,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:42,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:42,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:42,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:42,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:42,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:51:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:42,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:42,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:42,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:42,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:42,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:51:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:42,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:42,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:51:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:42,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:42,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:42,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:42,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:42,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:42,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:42,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853327592] [2020-10-13 10:51:42,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:42,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:51:42,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935876011] [2020-10-13 10:51:42,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:51:42,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:42,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:51:42,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:51:42,183 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 19 states. [2020-10-13 10:51:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:42,842 INFO L93 Difference]: Finished difference Result 286 states and 358 transitions. [2020-10-13 10:51:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 10:51:42,843 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-13 10:51:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:42,846 INFO L225 Difference]: With dead ends: 286 [2020-10-13 10:51:42,846 INFO L226 Difference]: Without dead ends: 257 [2020-10-13 10:51:42,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=372, Invalid=1268, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 10:51:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-13 10:51:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 82. [2020-10-13 10:51:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:51:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-13 10:51:42,869 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 64 [2020-10-13 10:51:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:42,869 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-13 10:51:42,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:51:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-13 10:51:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:51:42,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:42,870 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:42,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:51:42,871 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:42,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1882393943, now seen corresponding path program 12 times [2020-10-13 10:51:42,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:42,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33857988] [2020-10-13 10:51:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 10:51:43,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 10:51:43,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:51:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 10:51:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:43,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 10:51:43,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33857988] [2020-10-13 10:51:43,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:43,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:51:43,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529625822] [2020-10-13 10:51:43,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:51:43,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:43,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:51:43,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:51:43,187 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 12 states. [2020-10-13 10:51:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:43,329 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-10-13 10:51:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:51:43,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 10:51:43,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:43,331 INFO L225 Difference]: With dead ends: 95 [2020-10-13 10:51:43,331 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 10:51:43,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:51:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 10:51:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-10-13 10:51:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:51:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-13 10:51:43,355 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 65 [2020-10-13 10:51:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:43,356 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-13 10:51:43,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:51:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-13 10:51:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:43,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:43,357 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:43,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:51:43,358 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:43,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1400117880, now seen corresponding path program 13 times [2020-10-13 10:51:43,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:43,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525550317] [2020-10-13 10:51:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:43,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-13 10:51:43,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:43,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:43,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:43,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:43,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:43,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:43,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:43,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525550317] [2020-10-13 10:51:43,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:43,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:43,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001309307] [2020-10-13 10:51:43,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:43,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:43,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:43,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:43,887 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 21 states. [2020-10-13 10:51:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:44,504 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2020-10-13 10:51:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:51:44,505 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:44,506 INFO L225 Difference]: With dead ends: 153 [2020-10-13 10:51:44,506 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 10:51:44,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=347, Invalid=1135, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 10:51:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 10:51:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 90. [2020-10-13 10:51:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:51:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-13 10:51:44,527 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2020-10-13 10:51:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:44,527 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-13 10:51:44,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-13 10:51:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:44,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:44,528 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:44,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:51:44,528 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:44,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:44,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1044834297, now seen corresponding path program 16 times [2020-10-13 10:51:44,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:44,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536888260] [2020-10-13 10:51:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:44,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:44,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-13 10:51:44,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:44,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:44,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:44,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:44,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:44,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:44,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:44,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:44,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:44,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:44,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:44,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:44,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:44,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:44,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:44,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:44,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:44,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:44,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:44,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:44,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:44,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:44,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:44,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:44,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:44,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:44,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:44,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:44,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:44,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:44,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:44,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:44,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:44,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:44,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:44,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:44,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:44,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:44,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:44,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:44,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:44,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:45,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:45,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:45,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:45,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:45,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:45,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:45,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:45,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:45,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:45,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:45,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536888260] [2020-10-13 10:51:45,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:45,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:45,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492509446] [2020-10-13 10:51:45,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:45,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:45,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:45,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:45,018 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 21 states. [2020-10-13 10:51:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:45,757 INFO L93 Difference]: Finished difference Result 184 states and 219 transitions. [2020-10-13 10:51:45,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:51:45,758 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:45,760 INFO L225 Difference]: With dead ends: 184 [2020-10-13 10:51:45,760 INFO L226 Difference]: Without dead ends: 152 [2020-10-13 10:51:45,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=453, Invalid=1617, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 10:51:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-13 10:51:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2020-10-13 10:51:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:51:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-13 10:51:45,783 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2020-10-13 10:51:45,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:45,783 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-13 10:51:45,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-13 10:51:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:45,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:45,785 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:45,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:51:45,785 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:45,785 INFO L82 PathProgramCache]: Analyzing trace with hash -756278872, now seen corresponding path program 17 times [2020-10-13 10:51:45,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:45,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053026786] [2020-10-13 10:51:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:46,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 10:51:46,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:46,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:46,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:46,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:46,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:46,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:46,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:46,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:46,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:46,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:46,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:46,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:46,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:46,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:46,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:46,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053026786] [2020-10-13 10:51:46,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:46,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:46,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899493815] [2020-10-13 10:51:46,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:46,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:46,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:46,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:46,278 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 21 states. [2020-10-13 10:51:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:47,155 INFO L93 Difference]: Finished difference Result 214 states and 258 transitions. [2020-10-13 10:51:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 10:51:47,156 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:47,157 INFO L225 Difference]: With dead ends: 214 [2020-10-13 10:51:47,157 INFO L226 Difference]: Without dead ends: 182 [2020-10-13 10:51:47,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=544, Invalid=2006, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 10:51:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-13 10:51:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 90. [2020-10-13 10:51:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:51:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-13 10:51:47,181 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2020-10-13 10:51:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:47,182 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-13 10:51:47,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-13 10:51:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:47,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:47,183 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:47,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:51:47,183 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:47,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1301159961, now seen corresponding path program 18 times [2020-10-13 10:51:47,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:47,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943311720] [2020-10-13 10:51:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:47,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 10:51:47,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:47,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:47,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:47,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:47,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:47,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:47,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:47,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:47,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:47,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:47,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:47,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:47,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:47,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:47,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:47,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:47,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:47,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:47,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:51:47,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:47,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:47,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:47,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:47,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943311720] [2020-10-13 10:51:47,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:47,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:47,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568523861] [2020-10-13 10:51:47,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:47,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:47,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:47,671 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 21 states. [2020-10-13 10:51:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:48,639 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-10-13 10:51:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 10:51:48,639 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:48,641 INFO L225 Difference]: With dead ends: 243 [2020-10-13 10:51:48,641 INFO L226 Difference]: Without dead ends: 211 [2020-10-13 10:51:48,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 10:51:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-13 10:51:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 90. [2020-10-13 10:51:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:51:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-13 10:51:48,670 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2020-10-13 10:51:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:48,670 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-13 10:51:48,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-13 10:51:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:48,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:48,671 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:48,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:51:48,671 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:48,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1175115208, now seen corresponding path program 19 times [2020-10-13 10:51:48,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:48,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393035710] [2020-10-13 10:51:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:48,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 10:51:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:49,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:49,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:49,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:49,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:49,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:49,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:49,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:49,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:49,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:49,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:49,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:49,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:49,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:49,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:49,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:49,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:49,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:49,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:49,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:49,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393035710] [2020-10-13 10:51:49,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:49,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:49,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406923306] [2020-10-13 10:51:49,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:49,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:49,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:49,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:49,260 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 21 states. [2020-10-13 10:51:50,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:50,238 INFO L93 Difference]: Finished difference Result 271 states and 333 transitions. [2020-10-13 10:51:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 10:51:50,239 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:50,241 INFO L225 Difference]: With dead ends: 271 [2020-10-13 10:51:50,241 INFO L226 Difference]: Without dead ends: 239 [2020-10-13 10:51:50,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=627, Invalid=2343, Unknown=0, NotChecked=0, Total=2970 [2020-10-13 10:51:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-13 10:51:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 90. [2020-10-13 10:51:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:51:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-13 10:51:50,278 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2020-10-13 10:51:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:50,278 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-13 10:51:50,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-13 10:51:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:50,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:50,280 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:50,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:51:50,280 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:50,281 INFO L82 PathProgramCache]: Analyzing trace with hash 8069063, now seen corresponding path program 20 times [2020-10-13 10:51:50,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:50,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958270673] [2020-10-13 10:51:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:50,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 10:51:50,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:50,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:50,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:50,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:50,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:50,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:50,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:50,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:50,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:50,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:50,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:50,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:50,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:50,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958270673] [2020-10-13 10:51:50,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:50,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:50,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194793969] [2020-10-13 10:51:50,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:50,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:50,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:50,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:50,757 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 21 states. [2020-10-13 10:51:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:51,674 INFO L93 Difference]: Finished difference Result 298 states and 369 transitions. [2020-10-13 10:51:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 10:51:51,676 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:51,677 INFO L225 Difference]: With dead ends: 298 [2020-10-13 10:51:51,678 INFO L226 Difference]: Without dead ends: 266 [2020-10-13 10:51:51,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=607, Invalid=2255, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 10:51:51,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-13 10:51:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 90. [2020-10-13 10:51:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:51:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-13 10:51:51,707 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2020-10-13 10:51:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:51,708 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-13 10:51:51,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-13 10:51:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:51,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:51,709 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:51,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:51:51,709 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:51,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1276503576, now seen corresponding path program 21 times [2020-10-13 10:51:51,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:51,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746479454] [2020-10-13 10:51:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:51,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:51,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-13 10:51:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:52,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:52,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:52,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:52,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:52,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:52,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:52,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:52,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:52,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:52,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:52,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:52,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:52,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 91 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:52,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746479454] [2020-10-13 10:51:52,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:52,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:52,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754454298] [2020-10-13 10:51:52,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:52,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:52,189 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 21 states. [2020-10-13 10:51:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:53,099 INFO L93 Difference]: Finished difference Result 324 states and 404 transitions. [2020-10-13 10:51:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 10:51:53,100 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:53,102 INFO L225 Difference]: With dead ends: 324 [2020-10-13 10:51:53,102 INFO L226 Difference]: Without dead ends: 292 [2020-10-13 10:51:53,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 10:51:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-13 10:51:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 90. [2020-10-13 10:51:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:51:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-13 10:51:53,135 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 72 [2020-10-13 10:51:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:53,135 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-13 10:51:53,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-13 10:51:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:51:53,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:53,136 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:53,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:51:53,137 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:53,137 INFO L82 PathProgramCache]: Analyzing trace with hash 898815911, now seen corresponding path program 7 times [2020-10-13 10:51:53,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:53,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578486741] [2020-10-13 10:51:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:51:53,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-13 10:51:53,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:51:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:51:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:53,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:53,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:53,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:51:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:53,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:53,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:51:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:53,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:53,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:51:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:51:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:53,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:53,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:53,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:53,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:53,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:53,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:53,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:53,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:51:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:53,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:53,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:53,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:53,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:53,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:53,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578486741] [2020-10-13 10:51:53,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:53,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:51:53,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823631338] [2020-10-13 10:51:53,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:51:53,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:53,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:51:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:51:53,611 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 21 states. [2020-10-13 10:51:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:54,423 INFO L93 Difference]: Finished difference Result 352 states and 442 transitions. [2020-10-13 10:51:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 10:51:54,424 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-13 10:51:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:54,426 INFO L225 Difference]: With dead ends: 352 [2020-10-13 10:51:54,426 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 10:51:54,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 10:51:54,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 10:51:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 92. [2020-10-13 10:51:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 10:51:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2020-10-13 10:51:54,459 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 72 [2020-10-13 10:51:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:54,460 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2020-10-13 10:51:54,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:51:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2020-10-13 10:51:54,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:51:54,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:54,461 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:54,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:51:54,461 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:54,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:54,462 INFO L82 PathProgramCache]: Analyzing trace with hash 661172280, now seen corresponding path program 14 times [2020-10-13 10:51:54,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:54,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261802265] [2020-10-13 10:51:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 10:51:54,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 10:51:54,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:51:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 10:51:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:54,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:54,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:54,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:54,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:51:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:54,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:54,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:51:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:54,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:51:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:54,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:54,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:51:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:51:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:54,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:51:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:54,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:54,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:54,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:54,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:54,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 10:51:54,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261802265] [2020-10-13 10:51:54,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:54,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:51:54,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903527454] [2020-10-13 10:51:54,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:51:54,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:54,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:51:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:51:54,777 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 13 states. [2020-10-13 10:51:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:54,942 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2020-10-13 10:51:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:51:54,943 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-10-13 10:51:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:54,944 INFO L225 Difference]: With dead ends: 105 [2020-10-13 10:51:54,944 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 10:51:54,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:51:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 10:51:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2020-10-13 10:51:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 10:51:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-13 10:51:54,968 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 73 [2020-10-13 10:51:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:54,969 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-13 10:51:54,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:51:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-13 10:51:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:51:54,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:54,969 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:54,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:51:54,969 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:54,970 INFO L82 PathProgramCache]: Analyzing trace with hash 721712007, now seen corresponding path program 15 times [2020-10-13 10:51:54,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:54,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625629883] [2020-10-13 10:51:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:54,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:51:55,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 10:51:55,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:51:55,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:51:55,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:55,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:55,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:55,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:51:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:51:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:51:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:51:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:51:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:51:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:51:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:55,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:51:55,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625629883] [2020-10-13 10:51:55,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:55,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:51:55,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921570627] [2020-10-13 10:51:55,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:51:55,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:55,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:51:55,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:51:55,481 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 23 states. [2020-10-13 10:51:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:56,053 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2020-10-13 10:51:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:51:56,054 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:51:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:56,055 INFO L225 Difference]: With dead ends: 170 [2020-10-13 10:51:56,055 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 10:51:56,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=415, Invalid=1391, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 10:51:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 10:51:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 100. [2020-10-13 10:51:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:51:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:51:56,079 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:51:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:56,080 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:51:56,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:51:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:51:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:51:56,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:56,081 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:56,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:51:56,081 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:56,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:56,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1361922298, now seen corresponding path program 22 times [2020-10-13 10:51:56,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:56,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305458878] [2020-10-13 10:51:56,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:51:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:56,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:56,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:51:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:51:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:56,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:51:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:56,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:51:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:56,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:51:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:56,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:51:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:56,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:51:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:56,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:56,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:56,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:56,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:56,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:51:56,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305458878] [2020-10-13 10:51:56,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:56,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:51:56,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081489817] [2020-10-13 10:51:56,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:51:56,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:56,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:51:56,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:51:56,578 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:51:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:57,386 INFO L93 Difference]: Finished difference Result 205 states and 244 transitions. [2020-10-13 10:51:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 10:51:57,387 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:51:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:57,388 INFO L225 Difference]: With dead ends: 205 [2020-10-13 10:51:57,388 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 10:51:57,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 10:51:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 10:51:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 100. [2020-10-13 10:51:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:51:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:51:57,416 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:51:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:57,416 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:51:57,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:51:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:51:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:51:57,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:57,417 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:57,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:51:57,417 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:57,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1618904999, now seen corresponding path program 23 times [2020-10-13 10:51:57,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:57,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913203404] [2020-10-13 10:51:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:51:57,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-13 10:51:57,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:51:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:51:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:57,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:51:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:51:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:51:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:51:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:51:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:51:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:51:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:57,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:57,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:57,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:57,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:57,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:51:57,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913203404] [2020-10-13 10:51:57,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:57,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:51:57,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990192794] [2020-10-13 10:51:57,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:51:57,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:57,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:51:57,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:51:57,948 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:51:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:59,037 INFO L93 Difference]: Finished difference Result 239 states and 288 transitions. [2020-10-13 10:51:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 10:51:59,038 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:51:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:59,039 INFO L225 Difference]: With dead ends: 239 [2020-10-13 10:51:59,039 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 10:51:59,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=669, Invalid=2523, Unknown=0, NotChecked=0, Total=3192 [2020-10-13 10:51:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 10:51:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 100. [2020-10-13 10:51:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:51:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:51:59,065 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:51:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:59,065 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:51:59,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:51:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:51:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:51:59,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:59,066 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:59,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:51:59,066 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1437966054, now seen corresponding path program 24 times [2020-10-13 10:51:59,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:59,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333399350] [2020-10-13 10:51:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:51:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:51:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:51:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:51:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:51:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:51:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:51:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:51:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:59,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:59,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:51:59,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333399350] [2020-10-13 10:51:59,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:59,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:51:59,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904906918] [2020-10-13 10:51:59,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:51:59,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:59,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:51:59,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:51:59,534 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:52:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:00,667 INFO L93 Difference]: Finished difference Result 272 states and 331 transitions. [2020-10-13 10:52:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 10:52:00,668 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:52:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:00,669 INFO L225 Difference]: With dead ends: 272 [2020-10-13 10:52:00,669 INFO L226 Difference]: Without dead ends: 237 [2020-10-13 10:52:00,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=760, Invalid=2900, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 10:52:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-13 10:52:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 100. [2020-10-13 10:52:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:52:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:52:00,704 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:52:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:00,704 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:52:00,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:52:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:52:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:52:00,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:00,705 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:00,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:52:00,705 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:00,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1615911993, now seen corresponding path program 25 times [2020-10-13 10:52:00,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:00,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615720867] [2020-10-13 10:52:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:00,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:52:00,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:01,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:01,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:52:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:52:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:52:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:52:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:52:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:52:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:52:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:52:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:01,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:01,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:01,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:01,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:01,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:01,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:52:01,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615720867] [2020-10-13 10:52:01,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:01,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:52:01,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841683311] [2020-10-13 10:52:01,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:52:01,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:01,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:52:01,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:52:01,163 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:52:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:02,374 INFO L93 Difference]: Finished difference Result 304 states and 373 transitions. [2020-10-13 10:52:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 10:52:02,375 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:52:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:02,376 INFO L225 Difference]: With dead ends: 304 [2020-10-13 10:52:02,376 INFO L226 Difference]: Without dead ends: 269 [2020-10-13 10:52:02,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=809, Invalid=3097, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 10:52:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-13 10:52:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 100. [2020-10-13 10:52:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:52:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:52:02,415 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:52:02,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:02,415 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:52:02,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:52:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:52:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:52:02,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:02,416 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:02,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:52:02,416 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:02,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:02,417 INFO L82 PathProgramCache]: Analyzing trace with hash 502333126, now seen corresponding path program 26 times [2020-10-13 10:52:02,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:02,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065489311] [2020-10-13 10:52:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:52:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 10:52:02,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:52:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:52:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:02,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:02,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:52:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:52:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:52:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:52:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:52:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:52:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:52:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:52:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:02,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:02,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:52:02,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065489311] [2020-10-13 10:52:02,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:02,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:52:02,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369065365] [2020-10-13 10:52:02,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:52:02,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:02,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:52:02,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:52:02,919 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:52:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:04,199 INFO L93 Difference]: Finished difference Result 335 states and 414 transitions. [2020-10-13 10:52:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-13 10:52:04,202 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:52:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:04,205 INFO L225 Difference]: With dead ends: 335 [2020-10-13 10:52:04,205 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 10:52:04,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=810, Invalid=3096, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 10:52:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 10:52:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 100. [2020-10-13 10:52:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:52:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:52:04,240 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:52:04,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:04,240 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:52:04,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:52:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:52:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:52:04,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:04,241 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:04,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:52:04,241 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:04,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:04,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1956136935, now seen corresponding path program 27 times [2020-10-13 10:52:04,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:04,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975370064] [2020-10-13 10:52:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:52:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:04,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:04,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:52:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:04,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:52:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:52:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:04,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:52:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:04,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:52:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:52:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:52:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:52:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:04,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:04,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:04,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:04,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:52:04,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975370064] [2020-10-13 10:52:04,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:04,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:52:04,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087946902] [2020-10-13 10:52:04,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:52:04,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:04,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:52:04,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:52:04,735 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:52:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:06,073 INFO L93 Difference]: Finished difference Result 365 states and 454 transitions. [2020-10-13 10:52:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 10:52:06,074 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:52:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:06,077 INFO L225 Difference]: With dead ends: 365 [2020-10-13 10:52:06,077 INFO L226 Difference]: Without dead ends: 330 [2020-10-13 10:52:06,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=763, Invalid=2897, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 10:52:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-13 10:52:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 100. [2020-10-13 10:52:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:52:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:52:06,125 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:52:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:06,125 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:52:06,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:52:06,125 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:52:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:52:06,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:06,126 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:06,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:52:06,127 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:06,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:06,127 INFO L82 PathProgramCache]: Analyzing trace with hash -213723482, now seen corresponding path program 28 times [2020-10-13 10:52:06,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:06,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763201893] [2020-10-13 10:52:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:52:06,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 10:52:06,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:52:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:52:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:06,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:06,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:52:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:52:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:52:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:52:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:52:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:52:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:52:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:52:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:06,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:06,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:52:06,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763201893] [2020-10-13 10:52:06,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:06,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:52:06,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887212374] [2020-10-13 10:52:06,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:52:06,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:06,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:52:06,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:52:06,631 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:52:07,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:07,775 INFO L93 Difference]: Finished difference Result 394 states and 493 transitions. [2020-10-13 10:52:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 10:52:07,776 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:52:07,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:07,778 INFO L225 Difference]: With dead ends: 394 [2020-10-13 10:52:07,779 INFO L226 Difference]: Without dead ends: 359 [2020-10-13 10:52:07,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=674, Invalid=2518, Unknown=0, NotChecked=0, Total=3192 [2020-10-13 10:52:07,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-13 10:52:07,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 100. [2020-10-13 10:52:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:52:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-13 10:52:07,822 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 80 [2020-10-13 10:52:07,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:07,822 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-13 10:52:07,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:52:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-13 10:52:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:52:07,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:07,823 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:07,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:52:07,823 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:07,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2084834297, now seen corresponding path program 8 times [2020-10-13 10:52:07,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:07,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045548083] [2020-10-13 10:52:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:52:08,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 10:52:08,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:52:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:08,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:52:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:08,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:08,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:52:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:52:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:52:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:52:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:52:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:52:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:52:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 10:52:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:08,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:08,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:08,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:08,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:52:08,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045548083] [2020-10-13 10:52:08,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:08,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:52:08,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986562531] [2020-10-13 10:52:08,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:52:08,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:08,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:52:08,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:52:08,360 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 23 states. [2020-10-13 10:52:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:09,343 INFO L93 Difference]: Finished difference Result 425 states and 535 transitions. [2020-10-13 10:52:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 10:52:09,344 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 80 [2020-10-13 10:52:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:09,348 INFO L225 Difference]: With dead ends: 425 [2020-10-13 10:52:09,348 INFO L226 Difference]: Without dead ends: 390 [2020-10-13 10:52:09,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=555, Invalid=1995, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 10:52:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-13 10:52:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 102. [2020-10-13 10:52:09,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:52:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2020-10-13 10:52:09,396 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 80 [2020-10-13 10:52:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:09,396 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2020-10-13 10:52:09,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:52:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2020-10-13 10:52:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 10:52:09,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:09,397 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:09,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 10:52:09,397 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:09,397 INFO L82 PathProgramCache]: Analyzing trace with hash -125596105, now seen corresponding path program 16 times [2020-10-13 10:52:09,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:09,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466132302] [2020-10-13 10:52:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 10:52:09,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-13 10:52:09,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:52:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 10:52:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:09,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:09,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:09,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:09,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:09,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:09,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:09,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:09,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:52:09,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 10:52:09,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466132302] [2020-10-13 10:52:09,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:09,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:52:09,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157005199] [2020-10-13 10:52:09,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:52:09,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:52:09,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:52:09,893 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 14 states. [2020-10-13 10:52:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:10,107 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2020-10-13 10:52:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:52:10,108 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-10-13 10:52:10,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:10,109 INFO L225 Difference]: With dead ends: 115 [2020-10-13 10:52:10,109 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 10:52:10,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:52:10,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 10:52:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2020-10-13 10:52:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 10:52:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2020-10-13 10:52:10,141 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 81 [2020-10-13 10:52:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:10,141 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2020-10-13 10:52:10,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:52:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2020-10-13 10:52:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:10,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:10,142 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:10,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 10:52:10,142 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:10,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:10,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1515018072, now seen corresponding path program 17 times [2020-10-13 10:52:10,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:10,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58001102] [2020-10-13 10:52:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:10,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 10:52:10,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:10,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:10,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:10,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:10,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:10,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58001102] [2020-10-13 10:52:10,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:10,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:10,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933339031] [2020-10-13 10:52:10,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:10,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:10,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:10,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:10,754 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand 25 states. [2020-10-13 10:52:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:11,665 INFO L93 Difference]: Finished difference Result 187 states and 219 transitions. [2020-10-13 10:52:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:52:11,666 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:11,667 INFO L225 Difference]: With dead ends: 187 [2020-10-13 10:52:11,667 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 10:52:11,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=489, Invalid=1673, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 10:52:11,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 10:52:11,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 110. [2020-10-13 10:52:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:11,708 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:11,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:11,709 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:11,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:11,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:11,710 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:11,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 10:52:11,710 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash -226427609, now seen corresponding path program 29 times [2020-10-13 10:52:11,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:11,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76785437] [2020-10-13 10:52:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:11,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:12,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:12,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:12,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:12,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:12,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:12,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:12,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:12,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76785437] [2020-10-13 10:52:12,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:12,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:12,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239840368] [2020-10-13 10:52:12,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:12,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:12,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:12,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:12,318 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:13,342 INFO L93 Difference]: Finished difference Result 226 states and 269 transitions. [2020-10-13 10:52:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 10:52:13,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:13,344 INFO L225 Difference]: With dead ends: 226 [2020-10-13 10:52:13,344 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 10:52:13,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=652, Invalid=2428, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 10:52:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 10:52:13,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 110. [2020-10-13 10:52:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:13,407 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:13,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:13,408 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:13,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:13,408 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:13,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:13,412 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:13,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 10:52:13,412 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:13,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1570333496, now seen corresponding path program 30 times [2020-10-13 10:52:13,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:13,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993318162] [2020-10-13 10:52:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:13,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:13,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:13,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:13,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-13 10:52:13,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:13,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:14,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:14,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:14,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:14,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993318162] [2020-10-13 10:52:14,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:14,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:14,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245347297] [2020-10-13 10:52:14,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:14,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:14,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:14,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:14,194 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:15,529 INFO L93 Difference]: Finished difference Result 264 states and 318 transitions. [2020-10-13 10:52:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 10:52:15,530 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:15,531 INFO L225 Difference]: With dead ends: 264 [2020-10-13 10:52:15,532 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 10:52:15,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=807, Invalid=3099, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 10:52:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 10:52:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 110. [2020-10-13 10:52:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:15,587 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:15,587 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:15,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:15,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:15,591 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:15,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 10:52:15,593 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:15,593 INFO L82 PathProgramCache]: Analyzing trace with hash 325977351, now seen corresponding path program 31 times [2020-10-13 10:52:15,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:15,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627438564] [2020-10-13 10:52:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:15,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:15,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:15,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-13 10:52:15,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:16,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:16,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:16,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:16,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:16,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:16,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:16,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:16,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:16,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627438564] [2020-10-13 10:52:16,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:16,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:16,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118440340] [2020-10-13 10:52:16,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:16,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:16,356 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:17,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:17,840 INFO L93 Difference]: Finished difference Result 301 states and 366 transitions. [2020-10-13 10:52:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-13 10:52:17,841 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:17,843 INFO L225 Difference]: With dead ends: 301 [2020-10-13 10:52:17,844 INFO L226 Difference]: Without dead ends: 263 [2020-10-13 10:52:17,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=933, Invalid=3623, Unknown=0, NotChecked=0, Total=4556 [2020-10-13 10:52:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-13 10:52:17,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 110. [2020-10-13 10:52:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:17,884 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:17,885 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:17,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:17,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:17,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:17,885 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:17,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 10:52:17,886 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:17,886 INFO L82 PathProgramCache]: Analyzing trace with hash -305587992, now seen corresponding path program 32 times [2020-10-13 10:52:17,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:17,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035657704] [2020-10-13 10:52:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:18,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-13 10:52:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:18,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:18,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:18,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:18,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:18,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:18,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:18,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:18,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035657704] [2020-10-13 10:52:18,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:18,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:18,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487990370] [2020-10-13 10:52:18,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:18,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:18,535 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:20,152 INFO L93 Difference]: Finished difference Result 337 states and 413 transitions. [2020-10-13 10:52:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-13 10:52:20,153 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:20,154 INFO L225 Difference]: With dead ends: 337 [2020-10-13 10:52:20,154 INFO L226 Difference]: Without dead ends: 299 [2020-10-13 10:52:20,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1015, Invalid=3955, Unknown=0, NotChecked=0, Total=4970 [2020-10-13 10:52:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-13 10:52:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 110. [2020-10-13 10:52:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:20,199 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:20,199 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:20,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:20,200 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:20,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:20,201 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:20,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 10:52:20,201 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:20,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1849981721, now seen corresponding path program 33 times [2020-10-13 10:52:20,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:20,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90181491] [2020-10-13 10:52:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:20,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-13 10:52:20,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:20,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:20,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:20,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:20,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:20,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:20,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:20,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:20,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:20,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:20,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90181491] [2020-10-13 10:52:20,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:20,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:20,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231516654] [2020-10-13 10:52:20,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:20,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:20,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:20,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:20,937 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:22,642 INFO L93 Difference]: Finished difference Result 372 states and 459 transitions. [2020-10-13 10:52:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-13 10:52:22,643 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:22,644 INFO L225 Difference]: With dead ends: 372 [2020-10-13 10:52:22,644 INFO L226 Difference]: Without dead ends: 334 [2020-10-13 10:52:22,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1507 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1044, Invalid=4068, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 10:52:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-13 10:52:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 110. [2020-10-13 10:52:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:22,690 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:22,690 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:22,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:22,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:22,691 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:22,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 10:52:22,691 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:22,692 INFO L82 PathProgramCache]: Analyzing trace with hash -237232888, now seen corresponding path program 34 times [2020-10-13 10:52:22,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:22,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887198724] [2020-10-13 10:52:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:22,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:22,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:22,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-13 10:52:22,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:22,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:22,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:23,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:23,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:23,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:23,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:23,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:23,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:23,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:23,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:23,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:23,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:23,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887198724] [2020-10-13 10:52:23,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:23,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:23,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141223424] [2020-10-13 10:52:23,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:23,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:23,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:23,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:23,433 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:25,136 INFO L93 Difference]: Finished difference Result 406 states and 504 transitions. [2020-10-13 10:52:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-13 10:52:25,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:25,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:25,139 INFO L225 Difference]: With dead ends: 406 [2020-10-13 10:52:25,139 INFO L226 Difference]: Without dead ends: 368 [2020-10-13 10:52:25,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1017, Invalid=3953, Unknown=0, NotChecked=0, Total=4970 [2020-10-13 10:52:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-13 10:52:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 110. [2020-10-13 10:52:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:25,202 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:25,202 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:25,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:25,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:25,203 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:25,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 10:52:25,203 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:25,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1155040057, now seen corresponding path program 35 times [2020-10-13 10:52:25,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:25,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434376964] [2020-10-13 10:52:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:25,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 10:52:25,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:25,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:25,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:25,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:25,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:52:25,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:25,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:25,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:25,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:25,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:25,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 144 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:25,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434376964] [2020-10-13 10:52:25,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:25,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:25,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28161809] [2020-10-13 10:52:25,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:25,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:25,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:25,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:25,848 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:27,465 INFO L93 Difference]: Finished difference Result 439 states and 548 transitions. [2020-10-13 10:52:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-13 10:52:27,465 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:27,468 INFO L225 Difference]: With dead ends: 439 [2020-10-13 10:52:27,468 INFO L226 Difference]: Without dead ends: 401 [2020-10-13 10:52:27,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=937, Invalid=3619, Unknown=0, NotChecked=0, Total=4556 [2020-10-13 10:52:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-13 10:52:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 110. [2020-10-13 10:52:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:27,537 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:27,537 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:27,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:27,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:27,538 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:27,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 10:52:27,539 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:27,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1323194072, now seen corresponding path program 36 times [2020-10-13 10:52:27,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:27,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014356649] [2020-10-13 10:52:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:27,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:27,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:27,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-13 10:52:27,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:27,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:28,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:28,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:28,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:28,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 144 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:28,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014356649] [2020-10-13 10:52:28,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:28,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:28,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058959550] [2020-10-13 10:52:28,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:28,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:28,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:28,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:28,300 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:29,850 INFO L93 Difference]: Finished difference Result 471 states and 591 transitions. [2020-10-13 10:52:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-13 10:52:29,850 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:29,853 INFO L225 Difference]: With dead ends: 471 [2020-10-13 10:52:29,853 INFO L226 Difference]: Without dead ends: 433 [2020-10-13 10:52:29,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 10:52:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-13 10:52:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 110. [2020-10-13 10:52:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:52:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-13 10:52:29,902 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 88 [2020-10-13 10:52:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:29,903 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-13 10:52:29,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-13 10:52:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:52:29,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:29,903 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:29,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 10:52:29,903 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:29,904 INFO L82 PathProgramCache]: Analyzing trace with hash 888138919, now seen corresponding path program 9 times [2020-10-13 10:52:29,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:29,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993223904] [2020-10-13 10:52:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:52:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-13 10:52:30,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:52:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:52:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:30,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:30,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:52:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:30,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:52:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:30,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:30,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:52:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:30,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:30,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:52:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:30,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:52:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:30,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:30,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:52:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:30,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:52:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:30,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:52:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 10:52:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:30,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:30,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:30,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:30,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993223904] [2020-10-13 10:52:30,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:30,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:52:30,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693662076] [2020-10-13 10:52:30,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:52:30,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:30,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:52:30,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:52:30,530 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 25 states. [2020-10-13 10:52:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:32,005 INFO L93 Difference]: Finished difference Result 505 states and 637 transitions. [2020-10-13 10:52:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 10:52:32,006 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 88 [2020-10-13 10:52:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:32,010 INFO L225 Difference]: With dead ends: 505 [2020-10-13 10:52:32,010 INFO L226 Difference]: Without dead ends: 467 [2020-10-13 10:52:32,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=660, Invalid=2420, Unknown=0, NotChecked=0, Total=3080 [2020-10-13 10:52:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-13 10:52:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 112. [2020-10-13 10:52:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-13 10:52:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2020-10-13 10:52:32,088 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 88 [2020-10-13 10:52:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:32,089 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2020-10-13 10:52:32,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:52:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2020-10-13 10:52:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 10:52:32,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:32,090 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:32,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 10:52:32,090 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:32,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:32,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1719931736, now seen corresponding path program 18 times [2020-10-13 10:52:32,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:32,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852879604] [2020-10-13 10:52:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 10:52:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:32,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:52:32,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:32,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:32,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:32,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:32,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:32,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 10:52:32,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852879604] [2020-10-13 10:52:32,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:32,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:52:32,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823508765] [2020-10-13 10:52:32,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:52:32,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:32,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:52:32,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:52:32,601 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand 15 states. [2020-10-13 10:52:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:32,866 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2020-10-13 10:52:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:52:32,867 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-13 10:52:32,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:32,868 INFO L225 Difference]: With dead ends: 125 [2020-10-13 10:52:32,868 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 10:52:32,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:52:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 10:52:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2020-10-13 10:52:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 10:52:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2020-10-13 10:52:32,910 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 89 [2020-10-13 10:52:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:32,911 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2020-10-13 10:52:32,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:52:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2020-10-13 10:52:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:32,911 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:32,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 10:52:32,912 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash -670479257, now seen corresponding path program 19 times [2020-10-13 10:52:32,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:32,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261451680] [2020-10-13 10:52:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:33,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-13 10:52:33,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:33,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:33,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:33,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:52:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:33,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:33,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:33,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:33,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:33,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:33,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:33,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261451680] [2020-10-13 10:52:33,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:33,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:33,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126105438] [2020-10-13 10:52:33,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:33,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:33,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:33,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:33,667 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand 27 states. [2020-10-13 10:52:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:34,781 INFO L93 Difference]: Finished difference Result 204 states and 239 transitions. [2020-10-13 10:52:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:52:34,782 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:34,783 INFO L225 Difference]: With dead ends: 204 [2020-10-13 10:52:34,783 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 10:52:34,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=569, Invalid=1981, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 10:52:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 10:52:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 120. [2020-10-13 10:52:34,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:34,830 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:34,830 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:34,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:34,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:34,831 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:34,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 10:52:34,832 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:34,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2033627622, now seen corresponding path program 37 times [2020-10-13 10:52:34,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:34,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927573684] [2020-10-13 10:52:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:35,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-13 10:52:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:35,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:35,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:35,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:35,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:35,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:35,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:35,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:35,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:52:35,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:35,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:35,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:35,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:35,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:35,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927573684] [2020-10-13 10:52:35,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:35,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:35,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529544855] [2020-10-13 10:52:35,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:35,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:35,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:35,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:35,610 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:37,044 INFO L93 Difference]: Finished difference Result 247 states and 294 transitions. [2020-10-13 10:52:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 10:52:37,045 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:37,046 INFO L225 Difference]: With dead ends: 247 [2020-10-13 10:52:37,046 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 10:52:37,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=765, Invalid=2895, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 10:52:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 10:52:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 120. [2020-10-13 10:52:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:37,094 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:37,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:37,094 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:37,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:37,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:37,095 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:37,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 10:52:37,095 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:37,096 INFO L82 PathProgramCache]: Analyzing trace with hash 873930887, now seen corresponding path program 38 times [2020-10-13 10:52:37,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:37,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818109177] [2020-10-13 10:52:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:37,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-13 10:52:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:37,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:37,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:37,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:37,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:37,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:37,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:37,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:37,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818109177] [2020-10-13 10:52:37,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:37,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:37,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131165841] [2020-10-13 10:52:37,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:37,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:37,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:37,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:37,927 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:39,615 INFO L93 Difference]: Finished difference Result 289 states and 348 transitions. [2020-10-13 10:52:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 10:52:39,616 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:39,618 INFO L225 Difference]: With dead ends: 289 [2020-10-13 10:52:39,618 INFO L226 Difference]: Without dead ends: 248 [2020-10-13 10:52:39,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=958, Invalid=3734, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 10:52:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-13 10:52:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 120. [2020-10-13 10:52:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:39,680 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:39,680 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:39,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:39,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:39,681 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:39,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 10:52:39,681 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash -133310010, now seen corresponding path program 39 times [2020-10-13 10:52:39,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:39,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829066936] [2020-10-13 10:52:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:39,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:39,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:39,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:39,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-13 10:52:39,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:39,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:39,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:40,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:40,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:40,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:40,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829066936] [2020-10-13 10:52:40,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:40,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:40,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032295352] [2020-10-13 10:52:40,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:40,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:40,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:40,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:40,448 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:42,362 INFO L93 Difference]: Finished difference Result 330 states and 401 transitions. [2020-10-13 10:52:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-13 10:52:42,363 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:42,365 INFO L225 Difference]: With dead ends: 330 [2020-10-13 10:52:42,365 INFO L226 Difference]: Without dead ends: 289 [2020-10-13 10:52:42,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1124, Invalid=4426, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 10:52:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-13 10:52:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 120. [2020-10-13 10:52:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:42,426 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:42,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:42,426 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:42,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:42,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:42,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:42,427 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:42,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 10:52:42,428 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:42,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1412727641, now seen corresponding path program 40 times [2020-10-13 10:52:42,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:42,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763246926] [2020-10-13 10:52:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:42,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:42,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:42,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-13 10:52:42,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:43,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:43,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:43,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763246926] [2020-10-13 10:52:43,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:43,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:43,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390727571] [2020-10-13 10:52:43,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:43,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:43,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:43,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:43,151 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:45,070 INFO L93 Difference]: Finished difference Result 370 states and 453 transitions. [2020-10-13 10:52:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 10:52:45,071 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:45,072 INFO L225 Difference]: With dead ends: 370 [2020-10-13 10:52:45,073 INFO L226 Difference]: Without dead ends: 329 [2020-10-13 10:52:45,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1245, Invalid=4917, Unknown=0, NotChecked=0, Total=6162 [2020-10-13 10:52:45,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-13 10:52:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 120. [2020-10-13 10:52:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:45,142 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:45,143 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:45,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:45,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:45,143 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:45,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-13 10:52:45,144 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:45,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2008188506, now seen corresponding path program 41 times [2020-10-13 10:52:45,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:45,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536173740] [2020-10-13 10:52:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 10:52:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:45,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:45,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:45,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:45,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:45,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:45,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:45,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:45,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 175 proven. 30 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:45,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536173740] [2020-10-13 10:52:45,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:45,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:45,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382250678] [2020-10-13 10:52:45,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:45,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:45,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:45,861 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:47,938 INFO L93 Difference]: Finished difference Result 409 states and 504 transitions. [2020-10-13 10:52:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-13 10:52:47,940 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:47,943 INFO L225 Difference]: With dead ends: 409 [2020-10-13 10:52:47,943 INFO L226 Difference]: Without dead ends: 368 [2020-10-13 10:52:47,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1309, Invalid=5171, Unknown=0, NotChecked=0, Total=6480 [2020-10-13 10:52:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-13 10:52:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 120. [2020-10-13 10:52:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:48,029 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:48,029 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:48,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:48,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:48,029 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:48,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-13 10:52:48,030 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:48,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2027396921, now seen corresponding path program 42 times [2020-10-13 10:52:48,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:48,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597647465] [2020-10-13 10:52:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-13 10:52:48,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:48,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:48,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:48,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 175 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:48,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597647465] [2020-10-13 10:52:48,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:48,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:48,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212175133] [2020-10-13 10:52:48,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:48,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:48,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:48,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:48,737 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:50,964 INFO L93 Difference]: Finished difference Result 447 states and 554 transitions. [2020-10-13 10:52:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-13 10:52:50,965 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:50,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:50,968 INFO L225 Difference]: With dead ends: 447 [2020-10-13 10:52:50,968 INFO L226 Difference]: Without dead ends: 406 [2020-10-13 10:52:50,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1992 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1310, Invalid=5170, Unknown=0, NotChecked=0, Total=6480 [2020-10-13 10:52:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-13 10:52:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 120. [2020-10-13 10:52:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:51,049 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:51,050 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:51,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:51,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:51,050 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:51,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-13 10:52:51,050 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:51,051 INFO L82 PathProgramCache]: Analyzing trace with hash -642543226, now seen corresponding path program 43 times [2020-10-13 10:52:51,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:51,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091104812] [2020-10-13 10:52:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:51,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:51,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:51,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:51,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:51,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:51,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:51,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:51,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 175 proven. 34 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:51,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091104812] [2020-10-13 10:52:51,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:51,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:51,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380818673] [2020-10-13 10:52:51,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:51,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:51,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:51,762 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:54,020 INFO L93 Difference]: Finished difference Result 484 states and 603 transitions. [2020-10-13 10:52:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-13 10:52:54,021 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:54,023 INFO L225 Difference]: With dead ends: 484 [2020-10-13 10:52:54,023 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 10:52:54,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1888 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1248, Invalid=4914, Unknown=0, NotChecked=0, Total=6162 [2020-10-13 10:52:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 10:52:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 120. [2020-10-13 10:52:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:54,087 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:54,088 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:54,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:54,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:54,088 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:54,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-13 10:52:54,089 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 649055463, now seen corresponding path program 44 times [2020-10-13 10:52:54,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:54,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917368566] [2020-10-13 10:52:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:54,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-13 10:52:54,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:54,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:54,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:52:54,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:54,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 175 proven. 39 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:54,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917368566] [2020-10-13 10:52:54,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:54,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:54,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968196187] [2020-10-13 10:52:54,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:54,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:54,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:54,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:54,831 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:56,940 INFO L93 Difference]: Finished difference Result 520 states and 651 transitions. [2020-10-13 10:52:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 10:52:56,942 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:56,944 INFO L225 Difference]: With dead ends: 520 [2020-10-13 10:52:56,944 INFO L226 Difference]: Without dead ends: 479 [2020-10-13 10:52:56,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1129, Invalid=4421, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 10:52:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-13 10:52:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 120. [2020-10-13 10:52:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:57,009 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:57,009 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:57,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:57,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:57,010 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:57,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-13 10:52:57,010 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:57,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1937645926, now seen corresponding path program 45 times [2020-10-13 10:52:57,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:57,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726674908] [2020-10-13 10:52:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:52:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:52:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:52:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:52:57,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:52:57,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:52:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:52:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:52:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:52:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:52:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:52:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:52:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:52:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:52:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:52:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:52:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:52:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:52:57,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:52:57,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:52:57,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:52:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:52:57,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:52:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:52:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:52:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:52:57,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:52:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 175 proven. 46 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:52:57,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726674908] [2020-10-13 10:52:57,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:52:57,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:52:57,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539883528] [2020-10-13 10:52:57,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:52:57,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:52:57,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:52:57,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:52:57,759 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:52:59,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:52:59,824 INFO L93 Difference]: Finished difference Result 555 states and 698 transitions. [2020-10-13 10:52:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-13 10:52:59,825 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:52:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:52:59,827 INFO L225 Difference]: With dead ends: 555 [2020-10-13 10:52:59,827 INFO L226 Difference]: Without dead ends: 514 [2020-10-13 10:52:59,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=965, Invalid=3727, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 10:52:59,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-13 10:52:59,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 120. [2020-10-13 10:52:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:52:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-13 10:52:59,908 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 96 [2020-10-13 10:52:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:52:59,909 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-13 10:52:59,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:52:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-13 10:52:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:52:59,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:52:59,909 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:52:59,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-13 10:52:59,910 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:52:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:52:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash 593740039, now seen corresponding path program 10 times [2020-10-13 10:52:59,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:52:59,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428734204] [2020-10-13 10:52:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:52:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:52:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:53:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:00,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:53:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:53:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 10:53:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:53:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:53:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:53:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:53:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:53:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 10:53:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:53:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:53:00,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428734204] [2020-10-13 10:53:00,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:00,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:53:00,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522302923] [2020-10-13 10:53:00,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:53:00,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:53:00,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:53:00,610 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 27 states. [2020-10-13 10:53:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:02,358 INFO L93 Difference]: Finished difference Result 592 states and 748 transitions. [2020-10-13 10:53:02,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 10:53:02,359 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-13 10:53:02,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:02,363 INFO L225 Difference]: With dead ends: 592 [2020-10-13 10:53:02,363 INFO L226 Difference]: Without dead ends: 551 [2020-10-13 10:53:02,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=774, Invalid=2886, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 10:53:02,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-13 10:53:02,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 122. [2020-10-13 10:53:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 10:53:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2020-10-13 10:53:02,445 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 96 [2020-10-13 10:53:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:02,446 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2020-10-13 10:53:02,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:53:02,446 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2020-10-13 10:53:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 10:53:02,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:02,447 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:02,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-13 10:53:02,447 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:02,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2094860055, now seen corresponding path program 20 times [2020-10-13 10:53:02,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:02,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121218322] [2020-10-13 10:53:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 10:53:02,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 10:53:02,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 10:53:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 10:53:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:02,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:02,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:02,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:02,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:02,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:02,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:02,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:02,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:02,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:02,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:02,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:02,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:02,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 10:53:02,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121218322] [2020-10-13 10:53:02,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:02,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:53:02,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472891328] [2020-10-13 10:53:02,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:53:02,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:02,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:53:02,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:53:02,910 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand 16 states. [2020-10-13 10:53:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:03,216 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2020-10-13 10:53:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:53:03,218 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-13 10:53:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:03,219 INFO L225 Difference]: With dead ends: 135 [2020-10-13 10:53:03,219 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 10:53:03,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:53:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 10:53:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2020-10-13 10:53:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 10:53:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2020-10-13 10:53:03,295 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 97 [2020-10-13 10:53:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:03,296 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2020-10-13 10:53:03,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:53:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2020-10-13 10:53:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:03,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:03,296 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:03,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-13 10:53:03,297 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:03,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1387695160, now seen corresponding path program 21 times [2020-10-13 10:53:03,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:03,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854570980] [2020-10-13 10:53:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:04,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:04,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:04,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:04,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:04,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:04,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:04,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854570980] [2020-10-13 10:53:04,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:04,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:04,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66654743] [2020-10-13 10:53:04,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:04,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:04,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:04,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:04,163 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand 29 states. [2020-10-13 10:53:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:05,563 INFO L93 Difference]: Finished difference Result 221 states and 259 transitions. [2020-10-13 10:53:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:53:05,564 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:05,564 INFO L225 Difference]: With dead ends: 221 [2020-10-13 10:53:05,565 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 10:53:05,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=655, Invalid=2315, Unknown=0, NotChecked=0, Total=2970 [2020-10-13 10:53:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 10:53:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 130. [2020-10-13 10:53:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:05,692 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:05,692 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:05,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:05,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:05,693 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:05,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-13 10:53:05,693 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:05,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:05,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1597303367, now seen corresponding path program 46 times [2020-10-13 10:53:05,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:05,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384818871] [2020-10-13 10:53:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:06,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-13 10:53:06,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:06,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:06,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:06,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:06,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:06,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:06,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:06,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384818871] [2020-10-13 10:53:06,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:06,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:06,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071095377] [2020-10-13 10:53:06,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:06,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:06,555 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:08,252 INFO L93 Difference]: Finished difference Result 268 states and 319 transitions. [2020-10-13 10:53:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 10:53:08,253 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:08,255 INFO L225 Difference]: With dead ends: 268 [2020-10-13 10:53:08,255 INFO L226 Difference]: Without dead ends: 224 [2020-10-13 10:53:08,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=887, Invalid=3403, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 10:53:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-13 10:53:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-13 10:53:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:08,334 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:08,335 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:08,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:08,335 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:08,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:08,335 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:08,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-13 10:53:08,336 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:08,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:08,336 INFO L82 PathProgramCache]: Analyzing trace with hash -523163672, now seen corresponding path program 47 times [2020-10-13 10:53:08,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:08,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391492186] [2020-10-13 10:53:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:08,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:08,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:09,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:09,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391492186] [2020-10-13 10:53:09,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:09,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:09,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27286196] [2020-10-13 10:53:09,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:09,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:09,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:09,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:09,266 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:11,384 INFO L93 Difference]: Finished difference Result 314 states and 378 transitions. [2020-10-13 10:53:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-13 10:53:11,385 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:11,386 INFO L225 Difference]: With dead ends: 314 [2020-10-13 10:53:11,387 INFO L226 Difference]: Without dead ends: 270 [2020-10-13 10:53:11,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1122, Invalid=4428, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 10:53:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-13 10:53:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 130. [2020-10-13 10:53:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:11,499 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:11,499 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:11,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:11,499 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:11,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:11,500 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:11,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-13 10:53:11,500 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:11,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:11,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1071002151, now seen corresponding path program 48 times [2020-10-13 10:53:11,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:11,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893336340] [2020-10-13 10:53:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:11,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 10:53:11,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:12,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:12,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:12,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893336340] [2020-10-13 10:53:12,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:12,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:12,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203645462] [2020-10-13 10:53:12,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:12,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:12,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:12,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:12,314 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:14,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:14,624 INFO L93 Difference]: Finished difference Result 359 states and 436 transitions. [2020-10-13 10:53:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 10:53:14,625 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:14,627 INFO L225 Difference]: With dead ends: 359 [2020-10-13 10:53:14,627 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 10:53:14,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1333, Invalid=5309, Unknown=0, NotChecked=0, Total=6642 [2020-10-13 10:53:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 10:53:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 130. [2020-10-13 10:53:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:14,737 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:14,737 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:14,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:14,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:14,738 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:14,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-13 10:53:14,738 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:14,738 INFO L82 PathProgramCache]: Analyzing trace with hash -2064161784, now seen corresponding path program 49 times [2020-10-13 10:53:14,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:14,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684911254] [2020-10-13 10:53:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:15,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-13 10:53:15,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:15,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:15,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:15,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:15,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:15,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:15,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684911254] [2020-10-13 10:53:15,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:15,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:15,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439807093] [2020-10-13 10:53:15,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:15,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:15,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:15,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:15,606 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:18,240 INFO L93 Difference]: Finished difference Result 403 states and 493 transitions. [2020-10-13 10:53:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-13 10:53:18,241 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:18,243 INFO L225 Difference]: With dead ends: 403 [2020-10-13 10:53:18,243 INFO L226 Difference]: Without dead ends: 359 [2020-10-13 10:53:18,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2269 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1499, Invalid=5983, Unknown=0, NotChecked=0, Total=7482 [2020-10-13 10:53:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-13 10:53:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 130. [2020-10-13 10:53:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:18,325 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:18,326 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:18,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:18,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:18,327 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:18,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-13 10:53:18,327 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1575481863, now seen corresponding path program 50 times [2020-10-13 10:53:18,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:18,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208619581] [2020-10-13 10:53:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:18,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:18,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:18,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 10:53:18,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:19,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:19,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:53:19,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:19,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:19,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208619581] [2020-10-13 10:53:19,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:19,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:19,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483894844] [2020-10-13 10:53:19,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:19,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:19,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:19,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:19,142 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:21,881 INFO L93 Difference]: Finished difference Result 446 states and 549 transitions. [2020-10-13 10:53:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-13 10:53:21,882 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:21,884 INFO L225 Difference]: With dead ends: 446 [2020-10-13 10:53:21,884 INFO L226 Difference]: Without dead ends: 402 [2020-10-13 10:53:21,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2496 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1605, Invalid=6405, Unknown=0, NotChecked=0, Total=8010 [2020-10-13 10:53:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-13 10:53:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 130. [2020-10-13 10:53:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:21,976 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:21,976 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:21,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:21,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:21,977 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:21,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-13 10:53:21,977 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:21,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1078056920, now seen corresponding path program 51 times [2020-10-13 10:53:21,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:21,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667398805] [2020-10-13 10:53:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:22,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-13 10:53:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:22,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:22,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:22,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:22,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 209 proven. 36 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:22,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667398805] [2020-10-13 10:53:22,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:22,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:22,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475487030] [2020-10-13 10:53:22,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:22,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:22,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:22,862 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:25,813 INFO L93 Difference]: Finished difference Result 488 states and 604 transitions. [2020-10-13 10:53:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-13 10:53:25,814 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:25,816 INFO L225 Difference]: With dead ends: 488 [2020-10-13 10:53:25,816 INFO L226 Difference]: Without dead ends: 444 [2020-10-13 10:53:25,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1642, Invalid=6548, Unknown=0, NotChecked=0, Total=8190 [2020-10-13 10:53:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-13 10:53:25,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 130. [2020-10-13 10:53:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:25,902 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:25,902 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:25,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:25,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:25,903 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:25,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-13 10:53:25,903 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash -886560281, now seen corresponding path program 52 times [2020-10-13 10:53:25,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:25,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037904444] [2020-10-13 10:53:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:25,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:26,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-13 10:53:26,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:26,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:26,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 209 proven. 38 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:26,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037904444] [2020-10-13 10:53:26,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:26,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:26,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251023485] [2020-10-13 10:53:26,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:26,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:26,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:26,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:26,767 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:29,682 INFO L93 Difference]: Finished difference Result 529 states and 658 transitions. [2020-10-13 10:53:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-13 10:53:29,683 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:29,686 INFO L225 Difference]: With dead ends: 529 [2020-10-13 10:53:29,686 INFO L226 Difference]: Without dead ends: 485 [2020-10-13 10:53:29,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1607, Invalid=6403, Unknown=0, NotChecked=0, Total=8010 [2020-10-13 10:53:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-13 10:53:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 130. [2020-10-13 10:53:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:29,836 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:29,836 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:29,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:29,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:29,840 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:29,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-13 10:53:29,843 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1336374344, now seen corresponding path program 53 times [2020-10-13 10:53:29,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:29,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319026694] [2020-10-13 10:53:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:30,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-13 10:53:30,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:30,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:30,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:30,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:30,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:30,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:30,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:30,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:30,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:30,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:30,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:30,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:30,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:30,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:30,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:31,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:31,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:31,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:31,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:31,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:31,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:31,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:31,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:31,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:31,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:31,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 209 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:31,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319026694] [2020-10-13 10:53:31,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:31,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:31,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718838110] [2020-10-13 10:53:31,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:31,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:31,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:31,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:31,022 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:33,958 INFO L93 Difference]: Finished difference Result 569 states and 711 transitions. [2020-10-13 10:53:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-13 10:53:33,959 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:33,962 INFO L225 Difference]: With dead ends: 569 [2020-10-13 10:53:33,963 INFO L226 Difference]: Without dead ends: 525 [2020-10-13 10:53:33,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2357 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1503, Invalid=5979, Unknown=0, NotChecked=0, Total=7482 [2020-10-13 10:53:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-10-13 10:53:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 130. [2020-10-13 10:53:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:34,059 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:34,060 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:34,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:34,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:34,061 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:34,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-13 10:53:34,061 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash -254486073, now seen corresponding path program 54 times [2020-10-13 10:53:34,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:34,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871034422] [2020-10-13 10:53:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 10:53:34,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:34,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:34,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:34,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:34,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:34,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:34,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:34,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:34,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 209 proven. 48 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:34,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871034422] [2020-10-13 10:53:34,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:34,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:34,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883217669] [2020-10-13 10:53:34,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:34,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:34,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:34,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:34,878 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:37,505 INFO L93 Difference]: Finished difference Result 608 states and 763 transitions. [2020-10-13 10:53:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-13 10:53:37,507 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:37,510 INFO L225 Difference]: With dead ends: 608 [2020-10-13 10:53:37,510 INFO L226 Difference]: Without dead ends: 564 [2020-10-13 10:53:37,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1339, Invalid=5303, Unknown=0, NotChecked=0, Total=6642 [2020-10-13 10:53:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-13 10:53:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 130. [2020-10-13 10:53:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:37,603 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:37,604 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:37,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:37,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:37,604 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:37,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-13 10:53:37,605 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1414182808, now seen corresponding path program 55 times [2020-10-13 10:53:37,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:37,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488942731] [2020-10-13 10:53:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:37,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:37,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 10:53:37,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:38,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:38,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:38,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:38,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:38,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:38,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:38,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:38,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 209 proven. 56 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:38,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488942731] [2020-10-13 10:53:38,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:38,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:38,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921207593] [2020-10-13 10:53:38,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:38,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:38,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:38,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:38,485 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:41,107 INFO L93 Difference]: Finished difference Result 646 states and 814 transitions. [2020-10-13 10:53:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 10:53:41,108 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:41,112 INFO L225 Difference]: With dead ends: 646 [2020-10-13 10:53:41,112 INFO L226 Difference]: Without dead ends: 602 [2020-10-13 10:53:41,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1130, Invalid=4420, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 10:53:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-10-13 10:53:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 130. [2020-10-13 10:53:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:53:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-13 10:53:41,210 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 104 [2020-10-13 10:53:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:41,210 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-13 10:53:41,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-13 10:53:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:53:41,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:41,211 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:41,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-13 10:53:41,212 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:41,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1873543591, now seen corresponding path program 11 times [2020-10-13 10:53:41,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:41,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705473172] [2020-10-13 10:53:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 10:53:41,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 10:53:41,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:53:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 10:53:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:53:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:53:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:53:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:53:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:53:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:53:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:53:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 10:53:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:53:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 10:53:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:53:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 10:53:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:42,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:42,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:42,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:42,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705473172] [2020-10-13 10:53:42,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:42,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 10:53:42,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593304988] [2020-10-13 10:53:42,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 10:53:42,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:42,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 10:53:42,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:53:42,129 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 29 states. [2020-10-13 10:53:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:44,522 INFO L93 Difference]: Finished difference Result 686 states and 868 transitions. [2020-10-13 10:53:44,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-13 10:53:44,523 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 104 [2020-10-13 10:53:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:44,526 INFO L225 Difference]: With dead ends: 686 [2020-10-13 10:53:44,526 INFO L226 Difference]: Without dead ends: 642 [2020-10-13 10:53:44,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=897, Invalid=3393, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 10:53:44,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-13 10:53:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 132. [2020-10-13 10:53:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-13 10:53:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-10-13 10:53:44,645 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 104 [2020-10-13 10:53:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:44,645 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-10-13 10:53:44,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 10:53:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-10-13 10:53:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 10:53:44,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:44,646 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:44,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-13 10:53:44,646 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:44,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1993309816, now seen corresponding path program 22 times [2020-10-13 10:53:44,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:44,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160591220] [2020-10-13 10:53:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 10:53:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:45,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:45,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:53:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:53:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:45,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:53:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:45,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:53:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:53:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:45,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:53:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:53:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:53:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:53:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:53:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:53:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:53:45,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160591220] [2020-10-13 10:53:45,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:45,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:53:45,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642501197] [2020-10-13 10:53:45,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:53:45,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:53:45,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:53:45,179 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 17 states. [2020-10-13 10:53:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:45,571 INFO L93 Difference]: Finished difference Result 145 states and 160 transitions. [2020-10-13 10:53:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:53:45,573 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 105 [2020-10-13 10:53:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:45,574 INFO L225 Difference]: With dead ends: 145 [2020-10-13 10:53:45,574 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 10:53:45,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:53:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 10:53:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2020-10-13 10:53:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-13 10:53:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2020-10-13 10:53:45,672 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 105 [2020-10-13 10:53:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:45,673 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2020-10-13 10:53:45,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:53:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2020-10-13 10:53:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:53:45,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:45,674 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:45,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-13 10:53:45,674 INFO L427 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:45,674 INFO L82 PathProgramCache]: Analyzing trace with hash 121969991, now seen corresponding path program 23 times [2020-10-13 10:53:45,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:45,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252745730] [2020-10-13 10:53:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:53:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:46,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:53:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:53:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:53:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:53:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:53:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:53:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:53:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:53:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:53:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:53:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:53:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:53:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:46,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:46,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:46,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:46,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:46,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:46,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:46,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:53:46,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252745730] [2020-10-13 10:53:46,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:46,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:53:46,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896973662] [2020-10-13 10:53:46,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:53:46,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:46,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:53:46,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:53:46,710 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand 31 states. [2020-10-13 10:53:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:48,419 INFO L93 Difference]: Finished difference Result 238 states and 279 transitions. [2020-10-13 10:53:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 10:53:48,420 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:53:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:48,421 INFO L225 Difference]: With dead ends: 238 [2020-10-13 10:53:48,421 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 10:53:48,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=747, Invalid=2675, Unknown=0, NotChecked=0, Total=3422 [2020-10-13 10:53:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 10:53:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 140. [2020-10-13 10:53:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:53:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:53:48,521 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:53:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:48,521 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:53:48,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:53:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:53:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:53:48,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:48,521 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:48,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-13 10:53:48,522 INFO L427 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:48,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:48,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1219648314, now seen corresponding path program 56 times [2020-10-13 10:53:48,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:48,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957504136] [2020-10-13 10:53:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:48,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:48,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:53:48,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-13 10:53:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:53:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:53:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:53:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:53:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:53:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:53:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:53:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:53:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:53:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:53:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:53:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:53:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:53:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:53:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:49,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:49,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:49,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:53:49,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957504136] [2020-10-13 10:53:49,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:49,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:53:49,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699536537] [2020-10-13 10:53:49,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:53:49,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:49,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:53:49,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:53:49,590 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:53:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:51,832 INFO L93 Difference]: Finished difference Result 289 states and 344 transitions. [2020-10-13 10:53:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 10:53:51,834 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:53:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:51,835 INFO L225 Difference]: With dead ends: 289 [2020-10-13 10:53:51,835 INFO L226 Difference]: Without dead ends: 242 [2020-10-13 10:53:51,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1018, Invalid=3952, Unknown=0, NotChecked=0, Total=4970 [2020-10-13 10:53:51,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-13 10:53:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 140. [2020-10-13 10:53:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:53:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:53:51,941 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:53:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:51,941 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:53:51,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:53:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:53:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:53:51,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:51,942 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:51,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-13 10:53:51,942 INFO L427 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1785114983, now seen corresponding path program 57 times [2020-10-13 10:53:51,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:51,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11027681] [2020-10-13 10:53:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:52,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:53:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:52,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:52,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:52,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:53:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:53:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:53:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:53:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:52,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:52,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:52,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:52,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:52,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:53:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:52,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:53:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:53:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:53,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:53:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:53,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:53:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:53,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:53:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-13 10:53:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:53:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:53,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:53:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:53,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:53,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:53,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:53,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:53:53,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11027681] [2020-10-13 10:53:53,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:53,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:53:53,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964994400] [2020-10-13 10:53:53,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:53:53,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:53,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:53:53,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:53:53,055 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:53:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:53:55,727 INFO L93 Difference]: Finished difference Result 339 states and 408 transitions. [2020-10-13 10:53:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-13 10:53:55,729 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:53:55,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:53:55,730 INFO L225 Difference]: With dead ends: 339 [2020-10-13 10:53:55,730 INFO L226 Difference]: Without dead ends: 292 [2020-10-13 10:53:55,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1779 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1299, Invalid=5181, Unknown=0, NotChecked=0, Total=6480 [2020-10-13 10:53:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-13 10:53:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 140. [2020-10-13 10:53:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:53:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:53:55,845 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:53:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:53:55,845 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:53:55,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:53:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:53:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:53:55,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:53:55,846 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:53:55,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2020-10-13 10:53:55,846 INFO L427 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:53:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:53:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash 496569510, now seen corresponding path program 58 times [2020-10-13 10:53:55,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:53:55,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719718989] [2020-10-13 10:53:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:53:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:53:56,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-13 10:53:56,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:53:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:53:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:53:56,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:53:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:53:56,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:53:56,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:53:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:53:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:53:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:53:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:53:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:53:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:53:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:53:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:53:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:53:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:53:56,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:53:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:53:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:53:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:53:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:53:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:53:56,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:53:56,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:53:56,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:53:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:53:56,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:53:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:53:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:53:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:53:56,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:53:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:53:56,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719718989] [2020-10-13 10:53:56,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:53:56,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:53:56,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987724172] [2020-10-13 10:53:56,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:53:56,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:53:56,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:53:56,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:53:56,906 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:00,214 INFO L93 Difference]: Finished difference Result 388 states and 471 transitions. [2020-10-13 10:54:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-13 10:54:00,215 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:00,217 INFO L225 Difference]: With dead ends: 388 [2020-10-13 10:54:00,217 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 10:54:00,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2311 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1560, Invalid=6272, Unknown=0, NotChecked=0, Total=7832 [2020-10-13 10:54:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 10:54:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 140. [2020-10-13 10:54:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:00,332 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:00,332 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:00,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:00,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:00,333 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:00,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2020-10-13 10:54:00,333 INFO L427 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:00,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:00,333 INFO L82 PathProgramCache]: Analyzing trace with hash 455003527, now seen corresponding path program 59 times [2020-10-13 10:54:00,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:00,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238418314] [2020-10-13 10:54:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:00,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:00,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:00,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-13 10:54:00,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:00,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:00,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:01,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:01,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:01,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:01,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:01,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:01,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:01,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:01,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238418314] [2020-10-13 10:54:01,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:01,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:01,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758304233] [2020-10-13 10:54:01,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:01,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:01,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:01,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:01,392 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:04,997 INFO L93 Difference]: Finished difference Result 436 states and 533 transitions. [2020-10-13 10:54:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-13 10:54:04,999 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:05,001 INFO L225 Difference]: With dead ends: 436 [2020-10-13 10:54:05,001 INFO L226 Difference]: Without dead ends: 389 [2020-10-13 10:54:05,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2758 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1777, Invalid=7153, Unknown=0, NotChecked=0, Total=8930 [2020-10-13 10:54:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-13 10:54:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 140. [2020-10-13 10:54:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:05,127 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:05,128 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:05,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:05,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:05,129 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:05,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-13 10:54:05,129 INFO L427 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:05,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1700588678, now seen corresponding path program 60 times [2020-10-13 10:54:05,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:05,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133243792] [2020-10-13 10:54:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:05,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-13 10:54:05,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:06,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:06,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:06,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133243792] [2020-10-13 10:54:06,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:06,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:06,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910289832] [2020-10-13 10:54:06,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:06,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:06,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:06,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:06,356 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:10,387 INFO L93 Difference]: Finished difference Result 483 states and 594 transitions. [2020-10-13 10:54:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-13 10:54:10,389 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:10,391 INFO L225 Difference]: With dead ends: 483 [2020-10-13 10:54:10,391 INFO L226 Difference]: Without dead ends: 436 [2020-10-13 10:54:10,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3085 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1932, Invalid=7770, Unknown=0, NotChecked=0, Total=9702 [2020-10-13 10:54:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-13 10:54:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 140. [2020-10-13 10:54:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:10,519 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:10,519 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:10,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:10,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:10,520 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:10,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-13 10:54:10,520 INFO L427 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:10,521 INFO L82 PathProgramCache]: Analyzing trace with hash 493842855, now seen corresponding path program 61 times [2020-10-13 10:54:10,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:10,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702157663] [2020-10-13 10:54:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:10,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:10,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:10,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-13 10:54:10,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:11,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:11,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:11,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:11,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:11,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:11,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:11,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:11,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 246 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:11,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702157663] [2020-10-13 10:54:11,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:11,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:11,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269616210] [2020-10-13 10:54:11,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:11,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:11,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:11,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:11,592 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:15,565 INFO L93 Difference]: Finished difference Result 529 states and 654 transitions. [2020-10-13 10:54:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-13 10:54:15,566 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:15,580 INFO L225 Difference]: With dead ends: 529 [2020-10-13 10:54:15,580 INFO L226 Difference]: Without dead ends: 482 [2020-10-13 10:54:15,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2013, Invalid=8087, Unknown=0, NotChecked=0, Total=10100 [2020-10-13 10:54:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-13 10:54:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 140. [2020-10-13 10:54:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:15,766 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:15,766 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:15,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:15,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:15,767 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:15,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-13 10:54:15,767 INFO L427 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash 39273574, now seen corresponding path program 62 times [2020-10-13 10:54:15,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:15,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979760462] [2020-10-13 10:54:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:16,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-13 10:54:16,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:16,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:16,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:16,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:16,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:16,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:16,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:16,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:16,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 246 proven. 43 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:16,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979760462] [2020-10-13 10:54:16,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:16,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:16,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884209006] [2020-10-13 10:54:16,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:16,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:16,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:16,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:16,859 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:20,987 INFO L93 Difference]: Finished difference Result 574 states and 713 transitions. [2020-10-13 10:54:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-13 10:54:20,989 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:20,993 INFO L225 Difference]: With dead ends: 574 [2020-10-13 10:54:20,993 INFO L226 Difference]: Without dead ends: 527 [2020-10-13 10:54:20,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2014, Invalid=8086, Unknown=0, NotChecked=0, Total=10100 [2020-10-13 10:54:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-10-13 10:54:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 140. [2020-10-13 10:54:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:21,118 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:21,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:21,118 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:21,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:21,118 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:21,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:21,119 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:21,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-13 10:54:21,119 INFO L427 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:21,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1915052601, now seen corresponding path program 63 times [2020-10-13 10:54:21,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:21,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147020182] [2020-10-13 10:54:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:21,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:21,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-13 10:54:21,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:22,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:22,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:22,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:22,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:22,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:22,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:22,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:22,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 246 proven. 46 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:22,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147020182] [2020-10-13 10:54:22,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:22,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:22,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120905346] [2020-10-13 10:54:22,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:22,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:22,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:22,269 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:26,349 INFO L93 Difference]: Finished difference Result 618 states and 771 transitions. [2020-10-13 10:54:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-13 10:54:26,351 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:26,355 INFO L225 Difference]: With dead ends: 618 [2020-10-13 10:54:26,355 INFO L226 Difference]: Without dead ends: 571 [2020-10-13 10:54:26,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1935, Invalid=7767, Unknown=0, NotChecked=0, Total=9702 [2020-10-13 10:54:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-10-13 10:54:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 140. [2020-10-13 10:54:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:26,507 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:26,507 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:26,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:26,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:26,508 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:26,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2020-10-13 10:54:26,508 INFO L427 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1069945926, now seen corresponding path program 64 times [2020-10-13 10:54:26,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:26,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953120213] [2020-10-13 10:54:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-13 10:54:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:27,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:27,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:27,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:27,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:27,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:27,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:27,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:27,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:27,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:27,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953120213] [2020-10-13 10:54:27,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:27,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:27,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098941728] [2020-10-13 10:54:27,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:27,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:27,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:27,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:27,861 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:31,861 INFO L93 Difference]: Finished difference Result 661 states and 828 transitions. [2020-10-13 10:54:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-13 10:54:31,863 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:31,867 INFO L225 Difference]: With dead ends: 661 [2020-10-13 10:54:31,867 INFO L226 Difference]: Without dead ends: 614 [2020-10-13 10:54:31,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2878 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1782, Invalid=7148, Unknown=0, NotChecked=0, Total=8930 [2020-10-13 10:54:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-10-13 10:54:32,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 140. [2020-10-13 10:54:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:32,005 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:32,005 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:32,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:32,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:32,006 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:32,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2020-10-13 10:54:32,006 INFO L427 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:32,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:32,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1050521113, now seen corresponding path program 65 times [2020-10-13 10:54:32,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:32,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215406653] [2020-10-13 10:54:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:32,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:33,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 246 proven. 58 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:33,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215406653] [2020-10-13 10:54:33,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:33,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:33,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064900898] [2020-10-13 10:54:33,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:33,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:33,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:33,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:33,102 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:36,962 INFO L93 Difference]: Finished difference Result 703 states and 884 transitions. [2020-10-13 10:54:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-13 10:54:36,964 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:36,968 INFO L225 Difference]: With dead ends: 703 [2020-10-13 10:54:36,969 INFO L226 Difference]: Without dead ends: 656 [2020-10-13 10:54:36,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2451 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1567, Invalid=6265, Unknown=0, NotChecked=0, Total=7832 [2020-10-13 10:54:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-13 10:54:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 140. [2020-10-13 10:54:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:37,105 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:37,105 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:37,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:37,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:37,106 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:37,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2020-10-13 10:54:37,106 INFO L427 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:37,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:37,106 INFO L82 PathProgramCache]: Analyzing trace with hash 543644710, now seen corresponding path program 66 times [2020-10-13 10:54:37,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:37,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843569790] [2020-10-13 10:54:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:38,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:38,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:38,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:38,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843569790] [2020-10-13 10:54:38,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:38,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:38,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656560701] [2020-10-13 10:54:38,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:38,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:38,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:38,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:38,264 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:42,506 INFO L93 Difference]: Finished difference Result 744 states and 939 transitions. [2020-10-13 10:54:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-13 10:54:42,507 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:42,511 INFO L225 Difference]: With dead ends: 744 [2020-10-13 10:54:42,511 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 10:54:42,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1308, Invalid=5172, Unknown=0, NotChecked=0, Total=6480 [2020-10-13 10:54:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 10:54:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 140. [2020-10-13 10:54:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 10:54:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2020-10-13 10:54:42,654 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 112 [2020-10-13 10:54:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:42,654 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2020-10-13 10:54:42,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2020-10-13 10:54:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 10:54:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:42,655 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:42,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2020-10-13 10:54:42,656 INFO L427 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:42,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1703448071, now seen corresponding path program 12 times [2020-10-13 10:54:42,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:42,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778744836] [2020-10-13 10:54:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 10:54:43,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-13 10:54:43,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:54:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 10:54:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:43,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:43,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 10:54:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:54:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:54:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:54:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:54:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:54:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:54:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:54:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:54:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:54:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:54:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:43,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 10:54:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:43,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:43,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:43,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:43,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778744836] [2020-10-13 10:54:43,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:43,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:54:43,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738595984] [2020-10-13 10:54:43,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:54:43,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:43,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:54:43,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:54:43,805 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand 31 states. [2020-10-13 10:54:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:47,300 INFO L93 Difference]: Finished difference Result 787 states and 997 transitions. [2020-10-13 10:54:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-13 10:54:47,302 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 112 [2020-10-13 10:54:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:47,305 INFO L225 Difference]: With dead ends: 787 [2020-10-13 10:54:47,305 INFO L226 Difference]: Without dead ends: 740 [2020-10-13 10:54:47,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1308 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1029, Invalid=3941, Unknown=0, NotChecked=0, Total=4970 [2020-10-13 10:54:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-13 10:54:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 142. [2020-10-13 10:54:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 10:54:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2020-10-13 10:54:47,449 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 112 [2020-10-13 10:54:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:47,450 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2020-10-13 10:54:47,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:54:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2020-10-13 10:54:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 10:54:47,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:47,450 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:47,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2020-10-13 10:54:47,451 INFO L427 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:47,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:47,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2043840521, now seen corresponding path program 24 times [2020-10-13 10:54:47,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:47,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886794404] [2020-10-13 10:54:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:47,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 10:54:47,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-13 10:54:47,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 10:54:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-13 10:54:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:48,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:48,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:48,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:54:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:54:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:54:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:54:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:54:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:48,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:54:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:48,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:54:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:48,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:54:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:54:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 10:54:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 10:54:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 10:54:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:48,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:48,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:48,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 10:54:48,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886794404] [2020-10-13 10:54:48,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:48,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:54:48,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109162633] [2020-10-13 10:54:48,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:54:48,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:54:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:54:48,143 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand 18 states. [2020-10-13 10:54:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:48,664 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2020-10-13 10:54:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:54:48,666 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-13 10:54:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:48,667 INFO L225 Difference]: With dead ends: 155 [2020-10-13 10:54:48,667 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 10:54:48,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:54:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 10:54:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2020-10-13 10:54:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 10:54:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2020-10-13 10:54:48,805 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 113 [2020-10-13 10:54:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:48,805 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2020-10-13 10:54:48,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:54:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2020-10-13 10:54:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 10:54:48,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:48,806 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:48,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2020-10-13 10:54:48,806 INFO L427 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash -224246040, now seen corresponding path program 25 times [2020-10-13 10:54:48,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:48,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952384973] [2020-10-13 10:54:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:49,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:49,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 10:54:49,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:49,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-13 10:54:49,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:54:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 10:54:49,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:50,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:50,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:50,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:54:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:54:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:54:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:54:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:54:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:54:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:54:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:54:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:54:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 10:54:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 10:54:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 10:54:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 10:54:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:50,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:50,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:50,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:50,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:50,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 10:54:50,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952384973] [2020-10-13 10:54:50,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:50,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 10:54:50,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056748236] [2020-10-13 10:54:50,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 10:54:50,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 10:54:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:54:50,228 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 33 states. [2020-10-13 10:54:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:52,381 INFO L93 Difference]: Finished difference Result 255 states and 299 transitions. [2020-10-13 10:54:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 10:54:52,382 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 120 [2020-10-13 10:54:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:52,383 INFO L225 Difference]: With dead ends: 255 [2020-10-13 10:54:52,383 INFO L226 Difference]: Without dead ends: 205 [2020-10-13 10:54:52,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=845, Invalid=3061, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 10:54:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-13 10:54:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 150. [2020-10-13 10:54:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 10:54:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2020-10-13 10:54:52,539 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2020-10-13 10:54:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:52,539 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2020-10-13 10:54:52,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 10:54:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2020-10-13 10:54:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 10:54:52,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:52,542 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:52,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2020-10-13 10:54:52,542 INFO L427 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:52,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1087971481, now seen corresponding path program 67 times [2020-10-13 10:54:52,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:52,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393289091] [2020-10-13 10:54:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 10:54:53,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-13 10:54:53,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:54:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 10:54:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:53,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:53,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:53,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:54:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:54:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:54:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:54:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:54:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:54:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:54:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:54:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:54:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 10:54:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:53,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:53,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:53,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 10:54:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:54,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 10:54:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:54,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:54,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:54,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:54,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 10:54:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:54,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:54,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:54,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 286 proven. 79 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 10:54:54,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393289091] [2020-10-13 10:54:54,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:54,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 10:54:54,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351810002] [2020-10-13 10:54:54,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 10:54:54,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:54,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 10:54:54,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:54:54,038 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand 33 states. [2020-10-13 10:54:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:54:56,947 INFO L93 Difference]: Finished difference Result 310 states and 369 transitions. [2020-10-13 10:54:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 10:54:56,949 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 120 [2020-10-13 10:54:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:54:56,950 INFO L225 Difference]: With dead ends: 310 [2020-10-13 10:54:56,950 INFO L226 Difference]: Without dead ends: 260 [2020-10-13 10:54:56,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1158, Invalid=4542, Unknown=0, NotChecked=0, Total=5700 [2020-10-13 10:54:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-13 10:54:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 150. [2020-10-13 10:54:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 10:54:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2020-10-13 10:54:57,129 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2020-10-13 10:54:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:54:57,129 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2020-10-13 10:54:57,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 10:54:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2020-10-13 10:54:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 10:54:57,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:54:57,130 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:54:57,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2020-10-13 10:54:57,130 INFO L427 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:54:57,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:54:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1115833592, now seen corresponding path program 68 times [2020-10-13 10:54:57,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:54:57,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476738985] [2020-10-13 10:54:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:54:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:57,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 10:54:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:54:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:54:58,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:54:58,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:54:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:54:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:54:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:54:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:54:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:54:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:54:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:54:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:54:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:54:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:54:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 10:54:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 10:54:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 10:54:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 10:54:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:54:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:54:58,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:54:58,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:54:58,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:54:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:54:58,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:54:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:54:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:54:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:54:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:54:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 286 proven. 69 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 10:54:58,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476738985] [2020-10-13 10:54:58,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:54:58,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 10:54:58,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740475623] [2020-10-13 10:54:58,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 10:54:58,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:54:58,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 10:54:58,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:54:58,555 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand 33 states. [2020-10-13 10:55:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:55:02,085 INFO L93 Difference]: Finished difference Result 364 states and 438 transitions. [2020-10-13 10:55:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-13 10:55:02,087 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 120 [2020-10-13 10:55:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:55:02,088 INFO L225 Difference]: With dead ends: 364 [2020-10-13 10:55:02,088 INFO L226 Difference]: Without dead ends: 314 [2020-10-13 10:55:02,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1489, Invalid=5993, Unknown=0, NotChecked=0, Total=7482 [2020-10-13 10:55:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-13 10:55:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 150. [2020-10-13 10:55:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 10:55:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2020-10-13 10:55:02,277 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 120 [2020-10-13 10:55:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:55:02,277 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2020-10-13 10:55:02,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-13 10:55:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2020-10-13 10:55:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 10:55:02,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:55:02,278 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:55:02,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-10-13 10:55:02,278 INFO L427 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:55:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:55:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash -285448377, now seen corresponding path program 69 times [2020-10-13 10:55:02,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:55:02,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240118582] [2020-10-13 10:55:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:55:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:02,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 10:55:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:55:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:55:03,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:55:03,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:55:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:55:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:55:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:55:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:55:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:55:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:55:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:55:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:55:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:55:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:55:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 10:55:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 10:55:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 10:55:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 10:55:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:55:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:55:03,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:55:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:55:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 286 proven. 61 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-13 10:55:03,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240118582] [2020-10-13 10:55:03,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:55:03,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-13 10:55:03,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42842784] [2020-10-13 10:55:03,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-13 10:55:03,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:55:03,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-13 10:55:03,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:55:03,551 INFO L87 Difference]: Start difference. First operand 150 states and 165 transitions. Second operand 33 states.