/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=BIGGEST --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/array-tiling/pr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:28:31,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:28:31,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:28:31,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:28:31,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:28:31,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:28:31,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:28:31,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:28:31,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:28:31,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:28:31,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:28:31,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:28:31,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:28:31,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:28:31,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:28:31,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:28:31,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:28:31,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:28:31,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:28:31,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:28:31,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:28:31,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:28:31,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:28:31,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:28:31,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:28:31,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:28:31,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:28:31,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:28:31,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:28:31,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:28:31,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:28:31,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:28:31,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:28:31,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:28:31,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:28:31,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:28:31,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:28:31,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:28:31,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:28:31,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:28:31,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:28:31,206 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 [2020-10-12 10:28:31,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:28:31,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:28:31,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:28:31,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:28:31,230 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:28:31,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:28:31,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:28:31,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:28:31,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:28:31,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:28:31,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:28:31,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:28:31,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:28:31,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:28:31,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:28:31,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:28:31,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:28:31,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:28:31,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:28:31,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:28:31,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:28:31,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:28:31,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:28:31,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:28:31,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:28:31,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:28:31,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:28:31,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:28:31,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:28:31,235 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:28:31,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:28:31,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:28:31,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:28:31,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:28:31,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:28:31,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr2.c [2020-10-12 10:28:31,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e13947df8/01fcb88107b9422096b40d574ef141e7/FLAG9bfe0b746 [2020-10-12 10:28:32,037 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:28:32,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr2.c [2020-10-12 10:28:32,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e13947df8/01fcb88107b9422096b40d574ef141e7/FLAG9bfe0b746 [2020-10-12 10:28:32,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e13947df8/01fcb88107b9422096b40d574ef141e7 [2020-10-12 10:28:32,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:28:32,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:28:32,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:28:32,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:28:32,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:28:32,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32, skipping insertion in model container [2020-10-12 10:28:32,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:28:32,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:28:32,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:28:32,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:28:32,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:28:32,708 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:28:32,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32 WrapperNode [2020-10-12 10:28:32,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:28:32,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:28:32,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:28:32,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:28:32,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (1/1) ... [2020-10-12 10:28:32,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:28:32,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:28:32,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:28:32,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:28:32,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (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 [2020-10-12 10:28:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:28:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:28:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:28:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:28:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:28:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:28:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:28:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:28:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:28:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:28:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:28:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:28:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:28:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:28:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:28:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:28:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:28:33,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:28:33,161 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:28:33,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:28:33 BoogieIcfgContainer [2020-10-12 10:28:33,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:28:33,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:28:33,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:28:33,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:28:33,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:28:32" (1/3) ... [2020-10-12 10:28:33,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c831fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:28:33, skipping insertion in model container [2020-10-12 10:28:33,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:28:32" (2/3) ... [2020-10-12 10:28:33,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c831fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:28:33, skipping insertion in model container [2020-10-12 10:28:33,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:28:33" (3/3) ... [2020-10-12 10:28:33,174 INFO L109 eAbstractionObserver]: Analyzing ICFG pr2.c [2020-10-12 10:28:33,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:28:33,205 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:28:33,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:28:33,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:28:33,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:28:33,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:28:33,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:28:33,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:28:33,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:28:33,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:28:33,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:28:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-12 10:28:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:28:33,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:33,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:33,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1637249035, now seen corresponding path program 1 times [2020-10-12 10:28:33,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:33,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684588272] [2020-10-12 10:28:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:34,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:34,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:34,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:28:34,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:28:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-12 10:28:34,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:28:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 10:28:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:28:34,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:28:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:34,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:34,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:28:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:34,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:28:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 10:28:34,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:34,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684588272] [2020-10-12 10:28:34,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:28:34,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:28:34,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917191299] [2020-10-12 10:28:34,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:28:34,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:34,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:28:34,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:28:34,688 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2020-10-12 10:28:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:35,082 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2020-10-12 10:28:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:28:35,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-12 10:28:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:35,094 INFO L225 Difference]: With dead ends: 83 [2020-10-12 10:28:35,095 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 10:28:35,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:28:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 10:28:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-10-12 10:28:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 10:28:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 10:28:35,145 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-12 10:28:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:35,146 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 10:28:35,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:28:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 10:28:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 10:28:35,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:35,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:35,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:28:35,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:35,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1591679312, now seen corresponding path program 1 times [2020-10-12 10:28:35,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:35,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888665139] [2020-10-12 10:28:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:35,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:35,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:28:35,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:28:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-12 10:28:35,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:28:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:28:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:35,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:35,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:35,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:35,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:35,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:35,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:35,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:35,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:28:35,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:35,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888665139] [2020-10-12 10:28:35,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:35,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:28:35,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586310467] [2020-10-12 10:28:35,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:28:35,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:35,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:28:35,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:28:35,550 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 10 states. [2020-10-12 10:28:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:35,944 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-10-12 10:28:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:28:35,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-12 10:28:35,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:35,947 INFO L225 Difference]: With dead ends: 72 [2020-10-12 10:28:35,947 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 10:28:35,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:28:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 10:28:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-10-12 10:28:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 10:28:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-12 10:28:35,961 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 26 [2020-10-12 10:28:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:35,961 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-12 10:28:35,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:28:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-12 10:28:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 10:28:35,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:35,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:35,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:28:35,963 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:35,964 INFO L82 PathProgramCache]: Analyzing trace with hash -888767692, now seen corresponding path program 1 times [2020-10-12 10:28:35,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:35,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000626238] [2020-10-12 10:28:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:36,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:28:36,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:28:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 10:28:36,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:28:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:28:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:36,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:36,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:36,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:36,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:36,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:36,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000626238] [2020-10-12 10:28:36,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:36,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:28:36,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099677525] [2020-10-12 10:28:36,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:28:36,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:36,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:28:36,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:28:36,225 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 10 states. [2020-10-12 10:28:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:36,572 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2020-10-12 10:28:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:28:36,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-12 10:28:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:36,576 INFO L225 Difference]: With dead ends: 75 [2020-10-12 10:28:36,576 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 10:28:36,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:28:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 10:28:36,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2020-10-12 10:28:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 10:28:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-12 10:28:36,590 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 26 [2020-10-12 10:28:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:36,590 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-12 10:28:36,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:28:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-12 10:28:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:28:36,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:36,592 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, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:36,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:28:36,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:36,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:36,593 INFO L82 PathProgramCache]: Analyzing trace with hash -94938213, now seen corresponding path program 1 times [2020-10-12 10:28:36,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:36,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073894594] [2020-10-12 10:28:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:36,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 10:28:36,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:28:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 10:28:36,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:28:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:28:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 10:28:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:36,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:36,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:36,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:36,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:36,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:36,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:28:36,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:36,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073894594] [2020-10-12 10:28:36,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:36,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:28:36,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873752199] [2020-10-12 10:28:36,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:28:36,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:36,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:28:36,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:28:36,854 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 5 states. [2020-10-12 10:28:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:36,950 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2020-10-12 10:28:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:28:36,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-12 10:28:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:36,952 INFO L225 Difference]: With dead ends: 103 [2020-10-12 10:28:36,952 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 10:28:36,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:28:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 10:28:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-12 10:28:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 10:28:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2020-10-12 10:28:36,964 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 30 [2020-10-12 10:28:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:36,964 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2020-10-12 10:28:36,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:28:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2020-10-12 10:28:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:28:36,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:36,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:36,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:28:36,966 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:36,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1106055463, now seen corresponding path program 1 times [2020-10-12 10:28:36,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:36,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276802377] [2020-10-12 10:28:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 10:28:37,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:28:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 10:28:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:28:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:28:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 10:28:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:37,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:37,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:28:37,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 10:28:37,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276802377] [2020-10-12 10:28:37,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:37,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:28:37,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975121350] [2020-10-12 10:28:37,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:28:37,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:37,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:28:37,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:28:37,206 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 5 states. [2020-10-12 10:28:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:37,299 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2020-10-12 10:28:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:28:37,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-12 10:28:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:37,301 INFO L225 Difference]: With dead ends: 87 [2020-10-12 10:28:37,301 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 10:28:37,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:28:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 10:28:37,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-12 10:28:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 10:28:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-12 10:28:37,311 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 30 [2020-10-12 10:28:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:37,311 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-12 10:28:37,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:28:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-12 10:28:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:28:37,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:37,313 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, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:37,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:28:37,313 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1499082473, now seen corresponding path program 1 times [2020-10-12 10:28:37,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:37,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134118801] [2020-10-12 10:28:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 10:28:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 10:28:37,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 10:28:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:28:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:37,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:37,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:37,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:28:37,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:37,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:37,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134118801] [2020-10-12 10:28:37,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:28:37,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:28:37,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506467729] [2020-10-12 10:28:37,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:28:37,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:37,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:28:37,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:37,399 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 4 states. [2020-10-12 10:28:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:37,469 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2020-10-12 10:28:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:28:37,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-12 10:28:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:37,471 INFO L225 Difference]: With dead ends: 82 [2020-10-12 10:28:37,471 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 10:28:37,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 10:28:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2020-10-12 10:28:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 10:28:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-12 10:28:37,480 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 30 [2020-10-12 10:28:37,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:37,480 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-12 10:28:37,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:28:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-12 10:28:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:28:37,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:37,482 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, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:37,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:28:37,482 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash 814956567, now seen corresponding path program 2 times [2020-10-12 10:28:37,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:37,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737891447] [2020-10-12 10:28:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 10:28:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 10:28:37,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 10:28:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:28:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:37,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:37,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:37,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:28:37,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:37,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737891447] [2020-10-12 10:28:37,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:28:37,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:28:37,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161058885] [2020-10-12 10:28:37,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:28:37,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:37,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:28:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:37,567 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 4 states. [2020-10-12 10:28:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:37,639 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-12 10:28:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:28:37,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-12 10:28:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:37,640 INFO L225 Difference]: With dead ends: 73 [2020-10-12 10:28:37,641 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 10:28:37,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 10:28:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-12 10:28:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 10:28:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-12 10:28:37,649 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 30 [2020-10-12 10:28:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:37,650 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-12 10:28:37,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:28:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-12 10:28:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 10:28:37,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:37,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:37,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:28:37,652 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:37,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2079637061, now seen corresponding path program 1 times [2020-10-12 10:28:37,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:37,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997436507] [2020-10-12 10:28:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:28:37,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 10:28:37,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:28:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:28:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:37,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:37,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:37,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:28:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:37,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:37,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:37,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:28:37,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:37,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:37,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:37,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997436507] [2020-10-12 10:28:37,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:37,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:28:37,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710526606] [2020-10-12 10:28:37,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:28:37,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:37,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:28:37,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:28:37,930 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 8 states. [2020-10-12 10:28:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:38,273 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2020-10-12 10:28:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:28:38,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-12 10:28:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:38,275 INFO L225 Difference]: With dead ends: 91 [2020-10-12 10:28:38,275 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 10:28:38,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:28:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 10:28:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-10-12 10:28:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 10:28:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-12 10:28:38,304 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 35 [2020-10-12 10:28:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:38,305 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-12 10:28:38,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:28:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-12 10:28:38,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 10:28:38,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:38,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:38,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:28:38,311 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:38,312 INFO L82 PathProgramCache]: Analyzing trace with hash 390693319, now seen corresponding path program 1 times [2020-10-12 10:28:38,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:38,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899328779] [2020-10-12 10:28:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:38,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:38,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:28:38,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-12 10:28:38,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:28:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 10:28:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:38,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:28:38,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:38,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:38,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:38,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:38,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:28:38,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:28:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:38,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:28:38,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:38,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:28:38,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899328779] [2020-10-12 10:28:38,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:38,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:28:38,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890280208] [2020-10-12 10:28:38,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:28:38,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:38,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:28:38,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:28:38,725 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 10 states. [2020-10-12 10:28:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:39,159 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-12 10:28:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:28:39,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-12 10:28:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:39,161 INFO L225 Difference]: With dead ends: 97 [2020-10-12 10:28:39,161 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 10:28:39,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:28:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 10:28:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2020-10-12 10:28:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 10:28:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2020-10-12 10:28:39,178 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 35 [2020-10-12 10:28:39,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:39,180 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2020-10-12 10:28:39,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:28:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2020-10-12 10:28:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:28:39,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:39,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:39,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:28:39,182 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:39,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1367268032, now seen corresponding path program 1 times [2020-10-12 10:28:39,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:39,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657060832] [2020-10-12 10:28:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 10:28:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 10:28:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:28:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:28:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:39,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:39,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:39,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:39,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:39,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:28:39,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:39,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:39,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:28:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:28:39,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657060832] [2020-10-12 10:28:39,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:28:39,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:28:39,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242675810] [2020-10-12 10:28:39,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:28:39,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:39,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:28:39,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:39,354 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand 4 states. [2020-10-12 10:28:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:39,424 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2020-10-12 10:28:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:28:39,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 10:28:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:39,425 INFO L225 Difference]: With dead ends: 108 [2020-10-12 10:28:39,426 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 10:28:39,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 10:28:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2020-10-12 10:28:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 10:28:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-12 10:28:39,439 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 39 [2020-10-12 10:28:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:39,439 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-12 10:28:39,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:28:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-12 10:28:39,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:28:39,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:39,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:39,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:28:39,445 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:39,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1483762624, now seen corresponding path program 2 times [2020-10-12 10:28:39,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:39,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038970178] [2020-10-12 10:28:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 10:28:39,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 10:28:39,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:28:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:28:39,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:39,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:39,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:39,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:39,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:39,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:39,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:39,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:39,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:39,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:39,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:39,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:28:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:39,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:28:39,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038970178] [2020-10-12 10:28:39,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:28:39,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:28:39,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054445075] [2020-10-12 10:28:39,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:28:39,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:28:39,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:39,572 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 4 states. [2020-10-12 10:28:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:39,645 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2020-10-12 10:28:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:28:39,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 10:28:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:39,650 INFO L225 Difference]: With dead ends: 104 [2020-10-12 10:28:39,650 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 10:28:39,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:28:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 10:28:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-12 10:28:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 10:28:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-12 10:28:39,666 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 39 [2020-10-12 10:28:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:39,666 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-12 10:28:39,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:28:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-12 10:28:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 10:28:39,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:39,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:39,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:28:39,668 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:39,668 INFO L82 PathProgramCache]: Analyzing trace with hash 931531538, now seen corresponding path program 2 times [2020-10-12 10:28:39,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:39,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827671651] [2020-10-12 10:28:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:40,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:40,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 10:28:40,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:28:40,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-12 10:28:40,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:40,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:28:40,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:28:40,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 10:28:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:40,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:40,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:40,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:40,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:40,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:40,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:40,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:28:40,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:28:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:28:40,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:28:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:40,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:40,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:40,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:28:40,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:40,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:28:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:40,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:40,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:28:40,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:28:40,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827671651] [2020-10-12 10:28:40,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:40,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:28:40,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15370773] [2020-10-12 10:28:40,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:28:40,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:40,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:28:40,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:28:40,419 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 12 states. [2020-10-12 10:28:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:40,967 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2020-10-12 10:28:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:28:40,968 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-12 10:28:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:40,969 INFO L225 Difference]: With dead ends: 146 [2020-10-12 10:28:40,969 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 10:28:40,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:28:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 10:28:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-12 10:28:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 10:28:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-10-12 10:28:40,984 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 44 [2020-10-12 10:28:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:40,985 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-10-12 10:28:40,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:28:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-10-12 10:28:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:28:40,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:40,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:40,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:28:40,986 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:40,986 INFO L82 PathProgramCache]: Analyzing trace with hash 132923321, now seen corresponding path program 3 times [2020-10-12 10:28:40,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:40,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707374145] [2020-10-12 10:28:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:41,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:41,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 10:28:41,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:41,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 10:28:41,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:28:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 10:28:41,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:41,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:41,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:41,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:41,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:41,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:28:41,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:41,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:41,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:41,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:41,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:41,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:28:41,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:41,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:41,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:28:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:28:41,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:28:41,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707374145] [2020-10-12 10:28:41,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:41,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:28:41,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154828925] [2020-10-12 10:28:41,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:28:41,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:41,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:28:41,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:28:41,468 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 11 states. [2020-10-12 10:28:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:41,923 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2020-10-12 10:28:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:28:41,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-12 10:28:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:41,925 INFO L225 Difference]: With dead ends: 135 [2020-10-12 10:28:41,925 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 10:28:41,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:28:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 10:28:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2020-10-12 10:28:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-12 10:28:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2020-10-12 10:28:41,945 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 48 [2020-10-12 10:28:41,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:41,946 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2020-10-12 10:28:41,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:28:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2020-10-12 10:28:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:28:41,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:41,947 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:41,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:28:41,947 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1212026681, now seen corresponding path program 1 times [2020-10-12 10:28:41,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:41,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232797988] [2020-10-12 10:28:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:41,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:41,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:42,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:46,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:46,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 10:28:46,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:28:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:28:46,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:46,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:28:46,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:28:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 10:28:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:47,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:47,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:47,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:47,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:47,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:47,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:47,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:47,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:28:47,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:47,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:28:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:28:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:28:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:28:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:47,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:47,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:47,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:28:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 10:28:47,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232797988] [2020-10-12 10:28:47,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:47,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:28:47,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562140005] [2020-10-12 10:28:47,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:28:47,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:47,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:28:47,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:28:47,309 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand 12 states. [2020-10-12 10:28:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:47,684 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2020-10-12 10:28:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:28:47,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-12 10:28:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:47,686 INFO L225 Difference]: With dead ends: 126 [2020-10-12 10:28:47,686 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 10:28:47,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:28:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 10:28:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2020-10-12 10:28:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 10:28:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-10-12 10:28:47,701 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 48 [2020-10-12 10:28:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:47,701 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-10-12 10:28:47,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:28:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-10-12 10:28:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:28:47,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:47,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:47,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:28:47,703 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:47,703 INFO L82 PathProgramCache]: Analyzing trace with hash -593411653, now seen corresponding path program 2 times [2020-10-12 10:28:47,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:47,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028802842] [2020-10-12 10:28:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:52,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:52,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 10:28:52,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:28:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4753 [2020-10-12 10:28:52,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:28:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 10:28:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:52,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:52,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:52,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:52,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:52,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:52,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:52,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:52,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:52,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:52,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:28:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:28:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:28:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:28:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:52,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:28:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:28:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:28:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:52,689 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 10:28:52,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028802842] [2020-10-12 10:28:52,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:52,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:28:52,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810607446] [2020-10-12 10:28:52,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:28:52,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:52,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:28:52,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:28:52,692 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 14 states. [2020-10-12 10:28:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:53,161 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2020-10-12 10:28:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:28:53,161 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-12 10:28:53,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:53,163 INFO L225 Difference]: With dead ends: 120 [2020-10-12 10:28:53,163 INFO L226 Difference]: Without dead ends: 104 [2020-10-12 10:28:53,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:28:53,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-12 10:28:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2020-10-12 10:28:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 10:28:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2020-10-12 10:28:53,182 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 48 [2020-10-12 10:28:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:53,183 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2020-10-12 10:28:53,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:28:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2020-10-12 10:28:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:28:53,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:53,184 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:53,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:28:53,184 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:53,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1604528903, now seen corresponding path program 1 times [2020-10-12 10:28:53,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:53,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645651533] [2020-10-12 10:28:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:53,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 10:28:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 10:28:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:28:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:28:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:53,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:53,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:53,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:53,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:53,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:53,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:53,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:53,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:53,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:53,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:53,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:53,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:53,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:28:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:53,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:53,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:28:53,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645651533] [2020-10-12 10:28:53,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:53,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:28:53,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396358664] [2020-10-12 10:28:53,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:28:53,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:53,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:28:53,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:28:53,508 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 13 states. [2020-10-12 10:28:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:54,052 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2020-10-12 10:28:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:28:54,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-12 10:28:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:54,054 INFO L225 Difference]: With dead ends: 131 [2020-10-12 10:28:54,054 INFO L226 Difference]: Without dead ends: 129 [2020-10-12 10:28:54,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:28:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-12 10:28:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2020-10-12 10:28:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 10:28:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-10-12 10:28:54,075 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 48 [2020-10-12 10:28:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:54,076 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-10-12 10:28:54,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:28:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-10-12 10:28:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 10:28:54,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:54,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:54,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:28:54,077 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash -457774050, now seen corresponding path program 4 times [2020-10-12 10:28:54,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:54,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766423042] [2020-10-12 10:28:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:54,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:54,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 10:28:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 10:28:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:28:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 10:28:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:54,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:54,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:54,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:54,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:54,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:54,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:54,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:28:54,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:54,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:54,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:54,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:54,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:54,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:54,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:54,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:28:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:54,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:54,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:28:54,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:28:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:54,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:54,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:54,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:54,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:54,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:28:54,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766423042] [2020-10-12 10:28:54,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:54,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:28:54,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32324243] [2020-10-12 10:28:54,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:28:54,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:54,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:28:54,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:28:54,404 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 11 states. [2020-10-12 10:28:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:54,966 INFO L93 Difference]: Finished difference Result 152 states and 173 transitions. [2020-10-12 10:28:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:28:54,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-12 10:28:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:54,968 INFO L225 Difference]: With dead ends: 152 [2020-10-12 10:28:54,968 INFO L226 Difference]: Without dead ends: 136 [2020-10-12 10:28:54,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:28:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-12 10:28:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 105. [2020-10-12 10:28:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 10:28:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2020-10-12 10:28:54,992 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 57 [2020-10-12 10:28:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:54,994 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2020-10-12 10:28:54,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:28:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2020-10-12 10:28:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 10:28:54,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:54,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:54,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:28:54,995 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash 625404194, now seen corresponding path program 2 times [2020-10-12 10:28:54,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:54,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781268296] [2020-10-12 10:28:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:56,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:56,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 10:28:56,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:28:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1924 [2020-10-12 10:28:56,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:28:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 10:28:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:28:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:57,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:57,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:57,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:57,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:57,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:57,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:57,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:57,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:57,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:57,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:57,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:57,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:57,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:57,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:57,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:57,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:57,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:57,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:57,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:57,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:28:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:57,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:57,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:57,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:57,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:28:57,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:28:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:57,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:28:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:28:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:57,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:57,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 10:28:57,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781268296] [2020-10-12 10:28:57,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:57,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:28:57,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733220451] [2020-10-12 10:28:57,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:28:57,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:57,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:28:57,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:28:57,187 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand 16 states. [2020-10-12 10:28:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:58,099 INFO L93 Difference]: Finished difference Result 179 states and 209 transitions. [2020-10-12 10:28:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:28:58,100 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-12 10:28:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:58,101 INFO L225 Difference]: With dead ends: 179 [2020-10-12 10:28:58,102 INFO L226 Difference]: Without dead ends: 163 [2020-10-12 10:28:58,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:28:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-12 10:28:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 117. [2020-10-12 10:28:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 10:28:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2020-10-12 10:28:58,125 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 57 [2020-10-12 10:28:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:58,125 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2020-10-12 10:28:58,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:28:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2020-10-12 10:28:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 10:28:58,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:58,128 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:58,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:28:58,129 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:58,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1180034140, now seen corresponding path program 3 times [2020-10-12 10:28:58,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:58,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519824373] [2020-10-12 10:28:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 10:28:58,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 10:28:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:28:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:28:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 10:28:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:28:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:58,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:58,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:28:58,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:58,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:28:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:58,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:28:58,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:28:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:28:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:28:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:58,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:58,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:58,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:58,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:58,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:58,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:58,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:58,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:28:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:58,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:58,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:28:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:58,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:58,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:28:58,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:28:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:28:58,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:28:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:28:58,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:28:58,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:28:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:28:58,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519824373] [2020-10-12 10:28:58,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:28:58,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:28:58,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804837555] [2020-10-12 10:28:58,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:28:58,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:28:58,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:28:58,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:28:58,484 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 13 states. [2020-10-12 10:28:59,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:28:59,251 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2020-10-12 10:28:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 10:28:59,252 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 10:28:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:28:59,253 INFO L225 Difference]: With dead ends: 169 [2020-10-12 10:28:59,253 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 10:28:59,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:28:59,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 10:28:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-10-12 10:28:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-12 10:28:59,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2020-10-12 10:28:59,275 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 57 [2020-10-12 10:28:59,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:28:59,276 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2020-10-12 10:28:59,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:28:59,276 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2020-10-12 10:28:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 10:28:59,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:28:59,280 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:28:59,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:28:59,281 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:28:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:28:59,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2077793959, now seen corresponding path program 5 times [2020-10-12 10:28:59,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:28:59,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879169837] [2020-10-12 10:28:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:28:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:28:59,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:59,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:28:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:28:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 10:28:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:28:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-12 10:28:59,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:28:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:28:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:28:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 10:28:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:00,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:00,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:00,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:00,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:00,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:00,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:00,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:29:00,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:29:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:00,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:00,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:00,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:00,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:00,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:00,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:00,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:00,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:00,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:29:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:00,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:00,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:00,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:00,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:29:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:00,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:00,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 10:29:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:00,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:00,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:00,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:00,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:00,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:29:00,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879169837] [2020-10-12 10:29:00,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:00,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:29:00,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319004907] [2020-10-12 10:29:00,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:29:00,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:00,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:29:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:29:00,230 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand 15 states. [2020-10-12 10:29:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:00,866 INFO L93 Difference]: Finished difference Result 232 states and 261 transitions. [2020-10-12 10:29:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:29:00,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-12 10:29:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:00,868 INFO L225 Difference]: With dead ends: 232 [2020-10-12 10:29:00,868 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 10:29:00,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:29:00,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 10:29:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2020-10-12 10:29:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-12 10:29:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 148 transitions. [2020-10-12 10:29:00,887 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 148 transitions. Word has length 66 [2020-10-12 10:29:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:00,887 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 148 transitions. [2020-10-12 10:29:00,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:29:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 148 transitions. [2020-10-12 10:29:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:00,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:00,889 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:00,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:29:00,889 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash -578187584, now seen corresponding path program 6 times [2020-10-12 10:29:00,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:00,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428857721] [2020-10-12 10:29:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:01,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:01,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-12 10:29:01,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:29:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 10:29:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:01,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:01,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:01,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:01,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:01,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:01,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:01,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:01,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:01,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:01,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:01,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:01,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:01,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:01,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:01,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:01,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:01,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:01,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:01,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:01,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:01,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:01,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:01,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:29:01,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428857721] [2020-10-12 10:29:01,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:01,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:29:01,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264953395] [2020-10-12 10:29:01,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:29:01,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:01,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:29:01,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:29:01,364 INFO L87 Difference]: Start difference. First operand 132 states and 148 transitions. Second operand 14 states. [2020-10-12 10:29:02,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:02,283 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2020-10-12 10:29:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:29:02,288 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-12 10:29:02,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:02,290 INFO L225 Difference]: With dead ends: 196 [2020-10-12 10:29:02,290 INFO L226 Difference]: Without dead ends: 180 [2020-10-12 10:29:02,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2020-10-12 10:29:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-12 10:29:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 143. [2020-10-12 10:29:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-12 10:29:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2020-10-12 10:29:02,321 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 70 [2020-10-12 10:29:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:02,321 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2020-10-12 10:29:02,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:29:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2020-10-12 10:29:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:02,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:02,323 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:02,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 10:29:02,323 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:02,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1448541120, now seen corresponding path program 3 times [2020-10-12 10:29:02,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:02,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350831570] [2020-10-12 10:29:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:03,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:07,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 10:29:07,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 10:29:07,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:29:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:07,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 10:29:07,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:07,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:07,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:07,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:07,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:07,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:07,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:29:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:07,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:07,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:07,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:07,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:29:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:07,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:07,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 37 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 10:29:07,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350831570] [2020-10-12 10:29:07,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:07,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:29:07,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634558980] [2020-10-12 10:29:07,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:29:07,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:07,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:29:07,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:29:07,680 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand 16 states. [2020-10-12 10:29:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:08,440 INFO L93 Difference]: Finished difference Result 174 states and 199 transitions. [2020-10-12 10:29:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:29:08,441 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-12 10:29:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:08,442 INFO L225 Difference]: With dead ends: 174 [2020-10-12 10:29:08,442 INFO L226 Difference]: Without dead ends: 148 [2020-10-12 10:29:08,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:29:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-12 10:29:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2020-10-12 10:29:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-12 10:29:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2020-10-12 10:29:08,463 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 70 [2020-10-12 10:29:08,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:08,464 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2020-10-12 10:29:08,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:29:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2020-10-12 10:29:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:08,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:08,465 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:08,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 10:29:08,466 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:08,466 INFO L82 PathProgramCache]: Analyzing trace with hash -356897214, now seen corresponding path program 4 times [2020-10-12 10:29:08,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:08,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786026170] [2020-10-12 10:29:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:13,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 10:29:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 10:29:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:29:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 10:29:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:13,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:13,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:13,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:13,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:13,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:29:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:13,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:13,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:13,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:13,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:29:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:13,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 10:29:13,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786026170] [2020-10-12 10:29:13,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:13,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:29:13,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739081713] [2020-10-12 10:29:13,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:29:13,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:13,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:29:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:13,801 INFO L87 Difference]: Start difference. First operand 142 states and 160 transitions. Second operand 17 states. [2020-10-12 10:29:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:14,719 INFO L93 Difference]: Finished difference Result 188 states and 215 transitions. [2020-10-12 10:29:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:29:14,720 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-12 10:29:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:14,721 INFO L225 Difference]: With dead ends: 188 [2020-10-12 10:29:14,721 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 10:29:14,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:29:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 10:29:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 151. [2020-10-12 10:29:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-12 10:29:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2020-10-12 10:29:14,742 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 70 [2020-10-12 10:29:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:14,742 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2020-10-12 10:29:14,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:29:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2020-10-12 10:29:14,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:14,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:14,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:14,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 10:29:14,744 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:14,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:14,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1368014464, now seen corresponding path program 2 times [2020-10-12 10:29:14,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:14,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117183701] [2020-10-12 10:29:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:15,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-12 10:29:15,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:29:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 10:29:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:15,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:15,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:15,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:15,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:15,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:15,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:15,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:15,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:15,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:15,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:29:15,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117183701] [2020-10-12 10:29:15,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:15,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:29:15,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828701264] [2020-10-12 10:29:15,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:29:15,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:15,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:29:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:29:15,284 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand 16 states. [2020-10-12 10:29:16,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:16,309 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2020-10-12 10:29:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:29:16,309 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-12 10:29:16,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:16,311 INFO L225 Difference]: With dead ends: 196 [2020-10-12 10:29:16,311 INFO L226 Difference]: Without dead ends: 194 [2020-10-12 10:29:16,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 10:29:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-12 10:29:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2020-10-12 10:29:16,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-12 10:29:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 179 transitions. [2020-10-12 10:29:16,342 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 179 transitions. Word has length 70 [2020-10-12 10:29:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:16,342 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 179 transitions. [2020-10-12 10:29:16,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:29:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 179 transitions. [2020-10-12 10:29:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:29:16,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:16,345 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:16,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 10:29:16,345 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:16,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1738839287, now seen corresponding path program 7 times [2020-10-12 10:29:16,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:16,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596119726] [2020-10-12 10:29:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:29:16,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 10:29:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:29:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 10:29:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:16,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:16,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:16,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:16,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:16,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:16,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:16,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:16,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:16,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:29:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:16,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 15 proven. 75 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:29:16,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596119726] [2020-10-12 10:29:16,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:16,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:29:16,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198829348] [2020-10-12 10:29:16,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:29:16,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:16,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:29:16,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:29:16,745 INFO L87 Difference]: Start difference. First operand 160 states and 179 transitions. Second operand 14 states. [2020-10-12 10:29:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:17,728 INFO L93 Difference]: Finished difference Result 221 states and 251 transitions. [2020-10-12 10:29:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 10:29:17,731 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2020-10-12 10:29:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:17,732 INFO L225 Difference]: With dead ends: 221 [2020-10-12 10:29:17,732 INFO L226 Difference]: Without dead ends: 205 [2020-10-12 10:29:17,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:29:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-12 10:29:17,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2020-10-12 10:29:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-12 10:29:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-10-12 10:29:17,755 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 79 [2020-10-12 10:29:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:17,755 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-10-12 10:29:17,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:29:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-10-12 10:29:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:29:17,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:17,757 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:17,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 10:29:17,757 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1026039427, now seen corresponding path program 4 times [2020-10-12 10:29:17,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:17,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088357754] [2020-10-12 10:29:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:29:22,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:29:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:29:22,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:29:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 10:29:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:23,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:23,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:23,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:23,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:23,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:23,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:23,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:23,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:29:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:23,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:23,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:23,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:23,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:23,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:23,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:23,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:29:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:23,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:23,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 18 proven. 84 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 10:29:23,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088357754] [2020-10-12 10:29:23,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:23,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:29:23,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409079467] [2020-10-12 10:29:23,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:29:23,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:23,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:29:23,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:29:23,170 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 19 states. [2020-10-12 10:29:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:24,546 INFO L93 Difference]: Finished difference Result 211 states and 240 transitions. [2020-10-12 10:29:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 10:29:24,547 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 79 [2020-10-12 10:29:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:24,550 INFO L225 Difference]: With dead ends: 211 [2020-10-12 10:29:24,550 INFO L226 Difference]: Without dead ends: 195 [2020-10-12 10:29:24,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 10:29:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-12 10:29:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 166. [2020-10-12 10:29:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-12 10:29:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 187 transitions. [2020-10-12 10:29:24,575 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 187 transitions. Word has length 79 [2020-10-12 10:29:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:24,575 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 187 transitions. [2020-10-12 10:29:24,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:29:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 187 transitions. [2020-10-12 10:29:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:29:24,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:24,576 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:24,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 10:29:24,577 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1887136257, now seen corresponding path program 5 times [2020-10-12 10:29:24,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:24,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525519349] [2020-10-12 10:29:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:24,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:24,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:29:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-12 10:29:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:29:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 10:29:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:25,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:25,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:25,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:25,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:25,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:25,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:25,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:29:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:29:25,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525519349] [2020-10-12 10:29:25,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:25,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:29:25,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333276839] [2020-10-12 10:29:25,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:29:25,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:25,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:29:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:29:25,108 INFO L87 Difference]: Start difference. First operand 166 states and 187 transitions. Second operand 16 states. [2020-10-12 10:29:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:26,465 INFO L93 Difference]: Finished difference Result 227 states and 259 transitions. [2020-10-12 10:29:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 10:29:26,466 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-12 10:29:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:26,468 INFO L225 Difference]: With dead ends: 227 [2020-10-12 10:29:26,468 INFO L226 Difference]: Without dead ends: 225 [2020-10-12 10:29:26,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 10:29:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-12 10:29:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 180. [2020-10-12 10:29:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-12 10:29:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 203 transitions. [2020-10-12 10:29:26,498 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 203 transitions. Word has length 79 [2020-10-12 10:29:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:26,498 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 203 transitions. [2020-10-12 10:29:26,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:29:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 203 transitions. [2020-10-12 10:29:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 10:29:26,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:26,499 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:26,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 10:29:26,500 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1079483552, now seen corresponding path program 8 times [2020-10-12 10:29:26,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:26,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009148461] [2020-10-12 10:29:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:27,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:27,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:27,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:27,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:27,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:27,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:29:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:27,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:29:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:29:27,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009148461] [2020-10-12 10:29:27,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:27,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:29:27,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058788557] [2020-10-12 10:29:27,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:29:27,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:29:27,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:29:27,199 INFO L87 Difference]: Start difference. First operand 180 states and 203 transitions. Second operand 18 states. [2020-10-12 10:29:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:27,973 INFO L93 Difference]: Finished difference Result 341 states and 385 transitions. [2020-10-12 10:29:27,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:29:27,973 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 88 [2020-10-12 10:29:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:27,975 INFO L225 Difference]: With dead ends: 341 [2020-10-12 10:29:27,975 INFO L226 Difference]: Without dead ends: 201 [2020-10-12 10:29:27,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:29:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-12 10:29:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 192. [2020-10-12 10:29:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-12 10:29:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 215 transitions. [2020-10-12 10:29:27,998 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 215 transitions. Word has length 88 [2020-10-12 10:29:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:27,999 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 215 transitions. [2020-10-12 10:29:27,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:29:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 215 transitions. [2020-10-12 10:29:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 10:29:28,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:28,000 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:28,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 10:29:28,001 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:28,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:28,001 INFO L82 PathProgramCache]: Analyzing trace with hash 371110599, now seen corresponding path program 9 times [2020-10-12 10:29:28,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:28,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702781501] [2020-10-12 10:29:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 10:29:28,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-12 10:29:28,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:29:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 10:29:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:28,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:29:28,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 18 proven. 115 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:29:28,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702781501] [2020-10-12 10:29:28,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:28,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:29:28,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261638999] [2020-10-12 10:29:28,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:29:28,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:28,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:29:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:28,503 INFO L87 Difference]: Start difference. First operand 192 states and 215 transitions. Second operand 17 states. [2020-10-12 10:29:29,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:29,937 INFO L93 Difference]: Finished difference Result 261 states and 298 transitions. [2020-10-12 10:29:29,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 10:29:29,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-12 10:29:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:29,941 INFO L225 Difference]: With dead ends: 261 [2020-10-12 10:29:29,941 INFO L226 Difference]: Without dead ends: 245 [2020-10-12 10:29:29,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 10:29:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-12 10:29:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 203. [2020-10-12 10:29:29,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-12 10:29:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-10-12 10:29:29,965 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 92 [2020-10-12 10:29:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:29,966 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-10-12 10:29:29,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:29:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-10-12 10:29:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 10:29:29,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:29,968 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:29,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 10:29:29,969 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash 280431943, now seen corresponding path program 5 times [2020-10-12 10:29:29,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:29,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915571072] [2020-10-12 10:29:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:30,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:30,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:34,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:34,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 10:29:34,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:29:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 10:29:34,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:29:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 10:29:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:35,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:35,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:35,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:35,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:35,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:35,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:29:35,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:35,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 60 proven. 64 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 10:29:35,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915571072] [2020-10-12 10:29:35,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:35,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:29:35,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433024525] [2020-10-12 10:29:35,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:29:35,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:29:35,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:35,399 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 17 states. [2020-10-12 10:29:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:36,171 INFO L93 Difference]: Finished difference Result 234 states and 266 transitions. [2020-10-12 10:29:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:29:36,172 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-12 10:29:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:36,173 INFO L225 Difference]: With dead ends: 234 [2020-10-12 10:29:36,173 INFO L226 Difference]: Without dead ends: 208 [2020-10-12 10:29:36,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:29:36,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-12 10:29:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2020-10-12 10:29:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-12 10:29:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 227 transitions. [2020-10-12 10:29:36,196 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 227 transitions. Word has length 92 [2020-10-12 10:29:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:36,197 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 227 transitions. [2020-10-12 10:29:36,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:29:36,197 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 227 transitions. [2020-10-12 10:29:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 10:29:36,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:36,198 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:36,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 10:29:36,199 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:36,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:36,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1525006391, now seen corresponding path program 6 times [2020-10-12 10:29:36,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:36,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935776540] [2020-10-12 10:29:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 10:29:41,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:29:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:29:41,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:29:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 10:29:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:41,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:41,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:41,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:41,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:41,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:41,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:29:41,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 44 proven. 86 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 10:29:41,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935776540] [2020-10-12 10:29:41,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:41,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:29:41,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873874944] [2020-10-12 10:29:41,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:29:41,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:41,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:29:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:29:41,635 INFO L87 Difference]: Start difference. First operand 202 states and 227 transitions. Second operand 18 states. [2020-10-12 10:29:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:42,709 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2020-10-12 10:29:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:29:42,710 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 92 [2020-10-12 10:29:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:42,711 INFO L225 Difference]: With dead ends: 230 [2020-10-12 10:29:42,711 INFO L226 Difference]: Without dead ends: 214 [2020-10-12 10:29:42,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:29:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-12 10:29:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-10-12 10:29:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-12 10:29:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2020-10-12 10:29:42,742 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 92 [2020-10-12 10:29:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:42,743 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2020-10-12 10:29:42,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:29:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2020-10-12 10:29:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 10:29:42,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:42,744 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:42,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 10:29:42,744 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:42,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1758843655, now seen corresponding path program 3 times [2020-10-12 10:29:42,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:42,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043018422] [2020-10-12 10:29:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 10:29:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:43,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:43,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:43,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:43,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:43,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:43,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:43,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:43,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:43,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:43,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:29:43,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043018422] [2020-10-12 10:29:43,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:43,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:29:43,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948198421] [2020-10-12 10:29:43,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:29:43,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:29:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:29:43,335 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand 19 states. [2020-10-12 10:29:45,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:45,006 INFO L93 Difference]: Finished difference Result 253 states and 286 transitions. [2020-10-12 10:29:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 10:29:45,006 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 92 [2020-10-12 10:29:45,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:45,008 INFO L225 Difference]: With dead ends: 253 [2020-10-12 10:29:45,008 INFO L226 Difference]: Without dead ends: 251 [2020-10-12 10:29:45,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=1862, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 10:29:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-12 10:29:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-10-12 10:29:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-12 10:29:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 236 transitions. [2020-10-12 10:29:45,037 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 236 transitions. Word has length 92 [2020-10-12 10:29:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:45,037 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 236 transitions. [2020-10-12 10:29:45,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:29:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 236 transitions. [2020-10-12 10:29:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 10:29:45,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:45,039 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:45,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 10:29:45,039 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:45,040 INFO L82 PathProgramCache]: Analyzing trace with hash 144312528, now seen corresponding path program 10 times [2020-10-12 10:29:45,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:45,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64159333] [2020-10-12 10:29:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 10:29:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:45,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:45,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:29:45,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:45,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:45,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:45,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:45,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:45,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:45,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 10:29:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:45,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:45,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:45,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 21 proven. 147 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 10:29:45,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64159333] [2020-10-12 10:29:45,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:45,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:29:45,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062817750] [2020-10-12 10:29:45,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:29:45,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:45,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:29:45,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:45,580 INFO L87 Difference]: Start difference. First operand 211 states and 236 transitions. Second operand 17 states. [2020-10-12 10:29:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:47,177 INFO L93 Difference]: Finished difference Result 288 states and 327 transitions. [2020-10-12 10:29:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 10:29:47,177 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-10-12 10:29:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:47,180 INFO L225 Difference]: With dead ends: 288 [2020-10-12 10:29:47,180 INFO L226 Difference]: Without dead ends: 272 [2020-10-12 10:29:47,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 10:29:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-12 10:29:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 216. [2020-10-12 10:29:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-12 10:29:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 242 transitions. [2020-10-12 10:29:47,213 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 242 transitions. Word has length 101 [2020-10-12 10:29:47,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:47,214 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 242 transitions. [2020-10-12 10:29:47,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:29:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 242 transitions. [2020-10-12 10:29:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 10:29:47,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:47,216 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:47,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 10:29:47,216 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:47,216 INFO L82 PathProgramCache]: Analyzing trace with hash -921019688, now seen corresponding path program 6 times [2020-10-12 10:29:47,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:47,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927139400] [2020-10-12 10:29:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 10:29:52,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:29:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:29:52,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:29:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 10:29:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:52,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:52,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:52,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:52,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:52,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:52,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:52,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:29:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 10:29:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:52,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:52,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:52,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 85 proven. 96 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-12 10:29:52,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927139400] [2020-10-12 10:29:52,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:52,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:29:52,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864860518] [2020-10-12 10:29:52,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:29:52,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:29:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:29:52,618 INFO L87 Difference]: Start difference. First operand 216 states and 242 transitions. Second operand 19 states. [2020-10-12 10:29:54,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:54,015 INFO L93 Difference]: Finished difference Result 266 states and 300 transitions. [2020-10-12 10:29:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 10:29:54,015 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-12 10:29:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:54,017 INFO L225 Difference]: With dead ends: 266 [2020-10-12 10:29:54,017 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 10:29:54,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:29:54,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 10:29:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 205. [2020-10-12 10:29:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-12 10:29:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 225 transitions. [2020-10-12 10:29:54,042 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 225 transitions. Word has length 101 [2020-10-12 10:29:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:54,042 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 225 transitions. [2020-10-12 10:29:54,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:29:54,043 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 225 transitions. [2020-10-12 10:29:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 10:29:54,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:54,044 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:54,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 10:29:54,044 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1742111522, now seen corresponding path program 7 times [2020-10-12 10:29:54,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:54,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186076978] [2020-10-12 10:29:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 10:29:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:54,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:54,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:54,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:54,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:54,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:54,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:54,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:54,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:54,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 10:29:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:54,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 10:29:54,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186076978] [2020-10-12 10:29:54,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:54,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:29:54,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344683421] [2020-10-12 10:29:54,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:29:54,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:54,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:29:54,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:29:54,768 INFO L87 Difference]: Start difference. First operand 205 states and 225 transitions. Second operand 19 states. [2020-10-12 10:29:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:57,081 INFO L93 Difference]: Finished difference Result 260 states and 290 transitions. [2020-10-12 10:29:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 10:29:57,082 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-12 10:29:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:57,084 INFO L225 Difference]: With dead ends: 260 [2020-10-12 10:29:57,084 INFO L226 Difference]: Without dead ends: 258 [2020-10-12 10:29:57,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=2416, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 10:29:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-12 10:29:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 219. [2020-10-12 10:29:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-12 10:29:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 241 transitions. [2020-10-12 10:29:57,118 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 241 transitions. Word has length 101 [2020-10-12 10:29:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:57,119 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 241 transitions. [2020-10-12 10:29:57,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:29:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 241 transitions. [2020-10-12 10:29:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 10:29:57,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:57,120 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:57,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 10:29:57,120 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash -216765209, now seen corresponding path program 11 times [2020-10-12 10:29:57,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:57,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092780226] [2020-10-12 10:29:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:57,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:57,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 10:29:57,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:29:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-12 10:29:57,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:29:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:29:57,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 10:29:57,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:58,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:29:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:29:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:29:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:29:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:29:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:29:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 10:29:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 10:29:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 180 proven. 28 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:29:58,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092780226] [2020-10-12 10:29:58,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:58,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:29:58,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537094639] [2020-10-12 10:29:58,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:29:58,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:29:58,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:29:58,481 INFO L87 Difference]: Start difference. First operand 219 states and 241 transitions. Second operand 21 states. [2020-10-12 10:29:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:59,731 INFO L93 Difference]: Finished difference Result 407 states and 449 transitions. [2020-10-12 10:29:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 10:29:59,732 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 110 [2020-10-12 10:29:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:59,733 INFO L225 Difference]: With dead ends: 407 [2020-10-12 10:29:59,733 INFO L226 Difference]: Without dead ends: 240 [2020-10-12 10:29:59,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:29:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-12 10:29:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 231. [2020-10-12 10:29:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-12 10:29:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 253 transitions. [2020-10-12 10:29:59,766 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 253 transitions. Word has length 110 [2020-10-12 10:29:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:59,766 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 253 transitions. [2020-10-12 10:29:59,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:29:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 253 transitions. [2020-10-12 10:29:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 10:29:59,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:59,768 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:59,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 10:29:59,768 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1168811058, now seen corresponding path program 12 times [2020-10-12 10:29:59,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:59,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192524461] [2020-10-12 10:29:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 10:30:00,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-12 10:30:00,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:30:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 10:30:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:00,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:30:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:30:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:30:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:30:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:30:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:30:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 10:30:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:00,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:00,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:00,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:00,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 24 proven. 201 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:30:00,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192524461] [2020-10-12 10:30:00,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:00,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:30:00,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856133115] [2020-10-12 10:30:00,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:30:00,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:30:00,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:30:00,458 INFO L87 Difference]: Start difference. First operand 231 states and 253 transitions. Second operand 20 states. [2020-10-12 10:30:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:02,738 INFO L93 Difference]: Finished difference Result 304 states and 341 transitions. [2020-10-12 10:30:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-12 10:30:02,739 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 114 [2020-10-12 10:30:02,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:02,742 INFO L225 Difference]: With dead ends: 304 [2020-10-12 10:30:02,742 INFO L226 Difference]: Without dead ends: 288 [2020-10-12 10:30:02,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=321, Invalid=3219, Unknown=0, NotChecked=0, Total=3540 [2020-10-12 10:30:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-12 10:30:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 242. [2020-10-12 10:30:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-12 10:30:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 268 transitions. [2020-10-12 10:30:02,779 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 268 transitions. Word has length 114 [2020-10-12 10:30:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:02,780 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 268 transitions. [2020-10-12 10:30:02,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:30:02,780 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 268 transitions. [2020-10-12 10:30:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 10:30:02,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:02,781 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:02,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 10:30:02,782 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:02,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:02,782 INFO L82 PathProgramCache]: Analyzing trace with hash -269487154, now seen corresponding path program 7 times [2020-10-12 10:30:02,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:02,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255272015] [2020-10-12 10:30:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 10:30:07,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:30:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 10:30:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:30:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 10:30:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:08,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:08,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:08,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:08,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:08,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:30:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:08,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:08,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:30:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:08,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:30:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:08,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:08,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:30:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:08,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:30:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:08,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:30:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:08,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 10:30:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:08,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:08,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:08,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:08,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:08,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:08,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 86 proven. 130 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-12 10:30:08,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255272015] [2020-10-12 10:30:08,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:08,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:30:08,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694290785] [2020-10-12 10:30:08,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:30:08,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:08,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:30:08,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:30:08,545 INFO L87 Difference]: Start difference. First operand 242 states and 268 transitions. Second operand 20 states. [2020-10-12 10:30:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:09,804 INFO L93 Difference]: Finished difference Result 273 states and 304 transitions. [2020-10-12 10:30:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:30:09,804 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 114 [2020-10-12 10:30:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:09,806 INFO L225 Difference]: With dead ends: 273 [2020-10-12 10:30:09,806 INFO L226 Difference]: Without dead ends: 247 [2020-10-12 10:30:09,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:30:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-12 10:30:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 241. [2020-10-12 10:30:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-12 10:30:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 265 transitions. [2020-10-12 10:30:09,833 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 265 transitions. Word has length 114 [2020-10-12 10:30:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:09,834 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 265 transitions. [2020-10-12 10:30:09,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:30:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 265 transitions. [2020-10-12 10:30:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 10:30:09,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:09,835 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:09,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 10:30:09,835 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:09,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2074925488, now seen corresponding path program 8 times [2020-10-12 10:30:09,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:09,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659683234] [2020-10-12 10:30:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:14,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:14,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 10:30:14,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:30:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:30:14,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:30:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:14,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 10:30:14,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:15,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:15,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:15,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:30:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:30:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:30:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:30:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:30:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:30:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 10:30:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:15,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:15,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:15,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:15,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 60 proven. 162 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-12 10:30:15,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659683234] [2020-10-12 10:30:15,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:15,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:30:15,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158450529] [2020-10-12 10:30:15,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:30:15,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:15,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:30:15,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:30:15,447 INFO L87 Difference]: Start difference. First operand 241 states and 265 transitions. Second operand 21 states. [2020-10-12 10:30:17,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:17,299 INFO L93 Difference]: Finished difference Result 276 states and 305 transitions. [2020-10-12 10:30:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 10:30:17,300 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 114 [2020-10-12 10:30:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:17,302 INFO L225 Difference]: With dead ends: 276 [2020-10-12 10:30:17,302 INFO L226 Difference]: Without dead ends: 255 [2020-10-12 10:30:17,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=1321, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 10:30:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-12 10:30:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 241. [2020-10-12 10:30:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-12 10:30:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 263 transitions. [2020-10-12 10:30:17,331 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 263 transitions. Word has length 114 [2020-10-12 10:30:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:17,331 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 263 transitions. [2020-10-12 10:30:17,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:30:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 263 transitions. [2020-10-12 10:30:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 10:30:17,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:17,332 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:17,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 10:30:17,332 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1208924558, now seen corresponding path program 4 times [2020-10-12 10:30:17,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:17,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282691458] [2020-10-12 10:30:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 10:30:17,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-12 10:30:17,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:30:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 10:30:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:18,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:18,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:30:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:30:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:30:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:30:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:30:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:30:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 10:30:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:18,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 16 proven. 209 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:30:18,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282691458] [2020-10-12 10:30:18,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:18,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:30:18,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102691902] [2020-10-12 10:30:18,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:30:18,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:18,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:30:18,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:30:18,077 INFO L87 Difference]: Start difference. First operand 241 states and 263 transitions. Second operand 22 states. [2020-10-12 10:30:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:20,547 INFO L93 Difference]: Finished difference Result 296 states and 328 transitions. [2020-10-12 10:30:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-12 10:30:20,548 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 114 [2020-10-12 10:30:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:20,549 INFO L225 Difference]: With dead ends: 296 [2020-10-12 10:30:20,549 INFO L226 Difference]: Without dead ends: 294 [2020-10-12 10:30:20,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=276, Invalid=2804, Unknown=0, NotChecked=0, Total=3080 [2020-10-12 10:30:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-12 10:30:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 250. [2020-10-12 10:30:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-12 10:30:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 273 transitions. [2020-10-12 10:30:20,582 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 273 transitions. Word has length 114 [2020-10-12 10:30:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:20,582 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 273 transitions. [2020-10-12 10:30:20,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:30:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 273 transitions. [2020-10-12 10:30:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 10:30:20,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:20,584 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:20,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 10:30:20,584 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:20,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:20,584 INFO L82 PathProgramCache]: Analyzing trace with hash -355231831, now seen corresponding path program 13 times [2020-10-12 10:30:20,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:20,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794579548] [2020-10-12 10:30:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:20,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:20,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 10:30:20,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-12 10:30:20,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:30:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 10:30:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:21,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:30:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:30:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:30:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:30:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:30:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:30:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 10:30:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-12 10:30:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:21,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:21,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:21,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:21,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:21,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 27 proven. 243 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 10:30:21,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794579548] [2020-10-12 10:30:21,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:21,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:30:21,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100932896] [2020-10-12 10:30:21,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:30:21,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:30:21,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:30:21,295 INFO L87 Difference]: Start difference. First operand 250 states and 273 transitions. Second operand 20 states. [2020-10-12 10:30:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:23,669 INFO L93 Difference]: Finished difference Result 319 states and 354 transitions. [2020-10-12 10:30:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-12 10:30:23,670 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 123 [2020-10-12 10:30:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:23,672 INFO L225 Difference]: With dead ends: 319 [2020-10-12 10:30:23,672 INFO L226 Difference]: Without dead ends: 303 [2020-10-12 10:30:23,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=316, Invalid=3466, Unknown=0, NotChecked=0, Total=3782 [2020-10-12 10:30:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-12 10:30:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 255. [2020-10-12 10:30:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-12 10:30:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2020-10-12 10:30:23,714 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 123 [2020-10-12 10:30:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:23,714 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2020-10-12 10:30:23,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:30:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2020-10-12 10:30:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 10:30:23,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:23,716 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:23,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 10:30:23,716 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:23,716 INFO L82 PathProgramCache]: Analyzing trace with hash -587701189, now seen corresponding path program 8 times [2020-10-12 10:30:23,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:23,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551654145] [2020-10-12 10:30:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 10:30:24,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-12 10:30:24,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:30:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 10:30:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:24,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:24,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:30:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:30:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:30:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:30:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:30:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:30:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 10:30:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-12 10:30:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:24,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:24,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 10:30:24,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551654145] [2020-10-12 10:30:24,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:24,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:30:24,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006205297] [2020-10-12 10:30:24,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:30:24,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:24,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:30:24,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:30:24,863 INFO L87 Difference]: Start difference. First operand 255 states and 279 transitions. Second operand 22 states. [2020-10-12 10:30:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:27,896 INFO L93 Difference]: Finished difference Result 315 states and 350 transitions. [2020-10-12 10:30:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-12 10:30:27,897 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 123 [2020-10-12 10:30:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:27,900 INFO L225 Difference]: With dead ends: 315 [2020-10-12 10:30:27,900 INFO L226 Difference]: Without dead ends: 313 [2020-10-12 10:30:27,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=313, Invalid=3719, Unknown=0, NotChecked=0, Total=4032 [2020-10-12 10:30:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-12 10:30:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 269. [2020-10-12 10:30:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-12 10:30:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 295 transitions. [2020-10-12 10:30:27,942 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 295 transitions. Word has length 123 [2020-10-12 10:30:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:27,942 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 295 transitions. [2020-10-12 10:30:27,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:30:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 295 transitions. [2020-10-12 10:30:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 10:30:27,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:27,944 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:27,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 10:30:27,944 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:27,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:27,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1341882926, now seen corresponding path program 14 times [2020-10-12 10:30:27,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:27,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951119162] [2020-10-12 10:30:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 10:30:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:29,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:30:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:29,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:30:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:29,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:30:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:30:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:30:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:30:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:30:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:30:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 10:30:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-12 10:30:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 10:30:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 275 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:30:29,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951119162] [2020-10-12 10:30:29,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:29,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:30:29,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603899704] [2020-10-12 10:30:29,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:30:29,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:29,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:30:29,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:30:29,561 INFO L87 Difference]: Start difference. First operand 269 states and 295 transitions. Second operand 24 states. [2020-10-12 10:30:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:30,934 INFO L93 Difference]: Finished difference Result 495 states and 545 transitions. [2020-10-12 10:30:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:30:30,935 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-10-12 10:30:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:30,936 INFO L225 Difference]: With dead ends: 495 [2020-10-12 10:30:30,936 INFO L226 Difference]: Without dead ends: 290 [2020-10-12 10:30:30,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 10:30:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-12 10:30:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 281. [2020-10-12 10:30:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-12 10:30:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2020-10-12 10:30:30,980 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 132 [2020-10-12 10:30:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:30,980 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2020-10-12 10:30:30,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:30:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2020-10-12 10:30:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 10:30:30,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:30,982 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:30,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 10:30:30,983 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:30,983 INFO L82 PathProgramCache]: Analyzing trace with hash 913783253, now seen corresponding path program 15 times [2020-10-12 10:30:30,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:30,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590054085] [2020-10-12 10:30:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 10:30:31,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-12 10:30:31,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:30:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 10:30:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:31,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:30:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:30:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:30:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:30:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:30:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:30:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:30:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:30:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:30:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 30 proven. 311 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:30:31,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590054085] [2020-10-12 10:30:31,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:31,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:30:31,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981406744] [2020-10-12 10:30:31,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:30:31,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:30:31,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:30:31,932 INFO L87 Difference]: Start difference. First operand 281 states and 307 transitions. Second operand 23 states. [2020-10-12 10:30:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:35,275 INFO L93 Difference]: Finished difference Result 359 states and 401 transitions. [2020-10-12 10:30:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-12 10:30:35,276 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-10-12 10:30:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:35,279 INFO L225 Difference]: With dead ends: 359 [2020-10-12 10:30:35,279 INFO L226 Difference]: Without dead ends: 343 [2020-10-12 10:30:35,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=414, Invalid=4842, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 10:30:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-12 10:30:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 292. [2020-10-12 10:30:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-12 10:30:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 322 transitions. [2020-10-12 10:30:35,326 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 322 transitions. Word has length 136 [2020-10-12 10:30:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:35,326 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 322 transitions. [2020-10-12 10:30:35,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:30:35,326 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 322 transitions. [2020-10-12 10:30:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 10:30:35,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:35,328 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:35,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 10:30:35,328 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:35,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:35,328 INFO L82 PathProgramCache]: Analyzing trace with hash 691232597, now seen corresponding path program 9 times [2020-10-12 10:30:35,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:35,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637081163] [2020-10-12 10:30:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:40,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:40,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 10:30:40,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:30:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:30:40,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 10:30:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 10:30:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:41,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:41,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:41,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:30:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:30:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:30:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:30:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:41,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:30:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:41,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:30:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:30:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:30:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:41,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:41,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:30:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:41,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:41,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:41,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:41,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:41,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:41,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:41,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:41,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 76 proven. 262 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 10:30:41,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637081163] [2020-10-12 10:30:41,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:41,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:30:41,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673127771] [2020-10-12 10:30:41,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:30:41,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:41,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:30:41,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:30:41,224 INFO L87 Difference]: Start difference. First operand 292 states and 322 transitions. Second operand 24 states. [2020-10-12 10:30:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:43,812 INFO L93 Difference]: Finished difference Result 328 states and 363 transitions. [2020-10-12 10:30:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 10:30:43,813 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 136 [2020-10-12 10:30:43,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:43,815 INFO L225 Difference]: With dead ends: 328 [2020-10-12 10:30:43,815 INFO L226 Difference]: Without dead ends: 307 [2020-10-12 10:30:43,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=185, Invalid=1795, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 10:30:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-12 10:30:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 292. [2020-10-12 10:30:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-12 10:30:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 320 transitions. [2020-10-12 10:30:43,872 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 320 transitions. Word has length 136 [2020-10-12 10:30:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:43,873 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 320 transitions. [2020-10-12 10:30:43,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:30:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 320 transitions. [2020-10-12 10:30:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 10:30:43,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:43,875 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:43,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 10:30:43,875 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:43,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:43,875 INFO L82 PathProgramCache]: Analyzing trace with hash -319884653, now seen corresponding path program 10 times [2020-10-12 10:30:43,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:43,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378606317] [2020-10-12 10:30:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:48,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:48,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 10:30:48,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:30:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:30:48,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 10:30:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 10:30:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:49,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:49,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:30:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:30:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:30:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:30:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:30:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:30:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:30:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:49,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:30:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:30:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:49,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:49,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:49,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 112 proven. 220 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 10:30:49,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378606317] [2020-10-12 10:30:49,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:49,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:30:49,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146045967] [2020-10-12 10:30:49,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:30:49,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:49,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:30:49,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:30:49,615 INFO L87 Difference]: Start difference. First operand 292 states and 320 transitions. Second operand 23 states. [2020-10-12 10:30:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:51,495 INFO L93 Difference]: Finished difference Result 326 states and 358 transitions. [2020-10-12 10:30:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:30:51,496 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-10-12 10:30:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:51,497 INFO L225 Difference]: With dead ends: 326 [2020-10-12 10:30:51,497 INFO L226 Difference]: Without dead ends: 300 [2020-10-12 10:30:51,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:30:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-12 10:30:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 291. [2020-10-12 10:30:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-12 10:30:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2020-10-12 10:30:51,532 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 136 [2020-10-12 10:30:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:51,533 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2020-10-12 10:30:51,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:30:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2020-10-12 10:30:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 10:30:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:51,534 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:51,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 10:30:51,535 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2125322987, now seen corresponding path program 5 times [2020-10-12 10:30:51,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:51,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596951353] [2020-10-12 10:30:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 10:30:52,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-12 10:30:52,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:30:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 10:30:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:52,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:30:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:30:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:30:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:30:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:30:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:30:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:30:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:30:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:30:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:52,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:52,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 20 proven. 321 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:30:52,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596951353] [2020-10-12 10:30:52,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:52,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 10:30:52,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607310197] [2020-10-12 10:30:52,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 10:30:52,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 10:30:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:30:52,617 INFO L87 Difference]: Start difference. First operand 291 states and 317 transitions. Second operand 25 states. [2020-10-12 10:30:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:56,169 INFO L93 Difference]: Finished difference Result 351 states and 388 transitions. [2020-10-12 10:30:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-12 10:30:56,169 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2020-10-12 10:30:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:56,172 INFO L225 Difference]: With dead ends: 351 [2020-10-12 10:30:56,172 INFO L226 Difference]: Without dead ends: 349 [2020-10-12 10:30:56,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=362, Invalid=4330, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 10:30:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-12 10:30:56,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 300. [2020-10-12 10:30:56,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-12 10:30:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2020-10-12 10:30:56,222 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 136 [2020-10-12 10:30:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:56,222 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2020-10-12 10:30:56,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 10:30:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2020-10-12 10:30:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 10:30:56,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:56,225 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:56,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 10:30:56,225 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:56,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:56,226 INFO L82 PathProgramCache]: Analyzing trace with hash -504524414, now seen corresponding path program 16 times [2020-10-12 10:30:56,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:56,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142574646] [2020-10-12 10:30:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:56,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 10:30:56,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-12 10:30:56,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:30:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 10:30:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:57,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:30:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:30:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:30:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:30:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:30:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:30:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:30:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:30:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:30:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:30:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-12 10:30:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:57,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:57,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:57,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:57,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 33 proven. 363 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:30:57,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142574646] [2020-10-12 10:30:57,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:57,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:30:57,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085897166] [2020-10-12 10:30:57,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:30:57,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:57,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:30:57,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:30:57,357 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand 23 states. [2020-10-12 10:31:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:00,919 INFO L93 Difference]: Finished difference Result 374 states and 414 transitions. [2020-10-12 10:31:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-12 10:31:00,920 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 145 [2020-10-12 10:31:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:00,923 INFO L225 Difference]: With dead ends: 374 [2020-10-12 10:31:00,923 INFO L226 Difference]: Without dead ends: 358 [2020-10-12 10:31:00,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=406, Invalid=5144, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 10:31:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-12 10:31:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 305. [2020-10-12 10:31:00,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-12 10:31:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 333 transitions. [2020-10-12 10:31:00,965 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 333 transitions. Word has length 145 [2020-10-12 10:31:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:00,965 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 333 transitions. [2020-10-12 10:31:00,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:31:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 333 transitions. [2020-10-12 10:31:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 10:31:00,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:00,967 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:00,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 10:31:00,967 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:00,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:00,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2147209192, now seen corresponding path program 9 times [2020-10-12 10:31:00,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:00,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682803251] [2020-10-12 10:31:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:00,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 10:31:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-12 10:31:01,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 10:31:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:02,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:02,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:31:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:31:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:31:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:31:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:31:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:31:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:31:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:31:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:31:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:31:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-12 10:31:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:02,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:02,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:02,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:02,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:02,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:02,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 22 proven. 374 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:31:02,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682803251] [2020-10-12 10:31:02,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:02,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 10:31:02,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649678937] [2020-10-12 10:31:02,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 10:31:02,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:02,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 10:31:02,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:31:02,122 INFO L87 Difference]: Start difference. First operand 305 states and 333 transitions. Second operand 25 states. [2020-10-12 10:31:06,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:06,441 INFO L93 Difference]: Finished difference Result 370 states and 410 transitions. [2020-10-12 10:31:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-12 10:31:06,443 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 145 [2020-10-12 10:31:06,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:06,446 INFO L225 Difference]: With dead ends: 370 [2020-10-12 10:31:06,446 INFO L226 Difference]: Without dead ends: 368 [2020-10-12 10:31:06,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=397, Invalid=5303, Unknown=0, NotChecked=0, Total=5700 [2020-10-12 10:31:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-12 10:31:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 319. [2020-10-12 10:31:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-12 10:31:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 349 transitions. [2020-10-12 10:31:06,499 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 349 transitions. Word has length 145 [2020-10-12 10:31:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:06,500 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 349 transitions. [2020-10-12 10:31:06,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 10:31:06,500 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 349 transitions. [2020-10-12 10:31:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 10:31:06,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:06,502 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:06,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 10:31:06,502 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:06,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:06,502 INFO L82 PathProgramCache]: Analyzing trace with hash -968192907, now seen corresponding path program 17 times [2020-10-12 10:31:06,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:06,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207064069] [2020-10-12 10:31:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:07,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:07,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 10:31:07,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-12 10:31:07,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:31:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:31:07,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 10:31:07,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:08,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:08,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:31:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:31:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:31:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:31:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:31:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:31:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:31:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:31:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:31:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:31:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:31:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-12 10:31:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 10:31:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:08,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:08,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:08,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:08,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 390 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-12 10:31:09,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207064069] [2020-10-12 10:31:09,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:09,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 10:31:09,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294611220] [2020-10-12 10:31:09,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 10:31:09,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 10:31:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:31:09,010 INFO L87 Difference]: Start difference. First operand 319 states and 349 transitions. Second operand 27 states. [2020-10-12 10:31:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:10,858 INFO L93 Difference]: Finished difference Result 583 states and 641 transitions. [2020-10-12 10:31:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 10:31:10,859 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 154 [2020-10-12 10:31:10,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:10,861 INFO L225 Difference]: With dead ends: 583 [2020-10-12 10:31:10,861 INFO L226 Difference]: Without dead ends: 340 [2020-10-12 10:31:10,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=493, Invalid=2263, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 10:31:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-12 10:31:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 331. [2020-10-12 10:31:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-12 10:31:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 361 transitions. [2020-10-12 10:31:10,912 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 361 transitions. Word has length 154 [2020-10-12 10:31:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:10,912 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 361 transitions. [2020-10-12 10:31:10,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 10:31:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 361 transitions. [2020-10-12 10:31:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 10:31:10,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:10,915 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:10,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 10:31:10,915 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:10,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1452409636, now seen corresponding path program 18 times [2020-10-12 10:31:10,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:10,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733287014] [2020-10-12 10:31:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:11,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-12 10:31:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:12,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:31:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:31:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:31:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:12,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:31:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 10:31:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:31:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:31:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 10:31:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 10:31:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:12,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:12,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:12,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:12,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 36 proven. 445 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-12 10:31:12,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733287014] [2020-10-12 10:31:12,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:12,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:31:12,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740430569] [2020-10-12 10:31:12,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:31:12,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:12,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:31:12,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:31:12,274 INFO L87 Difference]: Start difference. First operand 331 states and 361 transitions. Second operand 26 states. [2020-10-12 10:31:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:16,984 INFO L93 Difference]: Finished difference Result 414 states and 461 transitions. [2020-10-12 10:31:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-12 10:31:16,986 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 158 [2020-10-12 10:31:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:16,989 INFO L225 Difference]: With dead ends: 414 [2020-10-12 10:31:16,989 INFO L226 Difference]: Without dead ends: 398 [2020-10-12 10:31:16,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1845 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=514, Invalid=6796, Unknown=0, NotChecked=0, Total=7310 [2020-10-12 10:31:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-12 10:31:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 342. [2020-10-12 10:31:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 10:31:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 376 transitions. [2020-10-12 10:31:17,028 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 376 transitions. Word has length 158 [2020-10-12 10:31:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:17,029 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 376 transitions. [2020-10-12 10:31:17,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:31:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 376 transitions. [2020-10-12 10:31:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 10:31:17,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:17,030 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 11, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:17,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 10:31:17,031 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:17,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2102591452, now seen corresponding path program 11 times [2020-10-12 10:31:17,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:17,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106288665] [2020-10-12 10:31:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:17,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:22,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 10:31:22,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:31:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 10:31:22,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 10:31:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:22,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 10:31:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:23,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:23,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:31:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:31:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:23,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:31:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:31:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 10:31:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:31:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:23,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:31:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:23,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 10:31:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:23,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:23,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 10:31:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:23,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:23,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:23,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 92 proven. 386 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 10:31:23,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106288665] [2020-10-12 10:31:23,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:23,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 10:31:23,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707758286] [2020-10-12 10:31:23,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 10:31:23,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:23,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 10:31:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:31:23,225 INFO L87 Difference]: Start difference. First operand 342 states and 376 transitions. Second operand 27 states. [2020-10-12 10:31:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:26,105 INFO L93 Difference]: Finished difference Result 375 states and 414 transitions. [2020-10-12 10:31:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:31:26,106 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 158 [2020-10-12 10:31:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:26,108 INFO L225 Difference]: With dead ends: 375 [2020-10-12 10:31:26,108 INFO L226 Difference]: Without dead ends: 354 [2020-10-12 10:31:26,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 30 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=145, Invalid=1661, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 10:31:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-12 10:31:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 342. [2020-10-12 10:31:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 10:31:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 374 transitions. [2020-10-12 10:31:26,170 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 374 transitions. Word has length 158 [2020-10-12 10:31:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:26,170 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 374 transitions. [2020-10-12 10:31:26,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 10:31:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 374 transitions. [2020-10-12 10:31:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 10:31:26,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:26,172 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:26,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 10:31:26,173 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:26,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:26,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1091474202, now seen corresponding path program 12 times [2020-10-12 10:31:26,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:26,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562150885] [2020-10-12 10:31:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 10:31:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:31:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 10:31:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 10:31:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-12 10:31:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:32,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:31:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:31:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:31:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:31:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 10:31:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:31:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:31:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:32,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 10:31:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:32,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 10:31:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:32,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:32,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 138 proven. 334 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-12 10:31:32,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562150885] [2020-10-12 10:31:32,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:32,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:31:32,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547535837] [2020-10-12 10:31:32,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:31:32,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:32,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:31:32,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:31:32,173 INFO L87 Difference]: Start difference. First operand 342 states and 374 transitions. Second operand 26 states. [2020-10-12 10:31:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:34,679 INFO L93 Difference]: Finished difference Result 373 states and 409 transitions. [2020-10-12 10:31:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:31:34,680 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 158 [2020-10-12 10:31:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:34,682 INFO L225 Difference]: With dead ends: 373 [2020-10-12 10:31:34,682 INFO L226 Difference]: Without dead ends: 347 [2020-10-12 10:31:34,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=119, Invalid=1441, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 10:31:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-12 10:31:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 341. [2020-10-12 10:31:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-12 10:31:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 371 transitions. [2020-10-12 10:31:34,732 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 371 transitions. Word has length 158 [2020-10-12 10:31:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:34,733 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 371 transitions. [2020-10-12 10:31:34,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:31:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 371 transitions. [2020-10-12 10:31:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 10:31:34,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:34,735 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:34,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 10:31:34,736 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:34,736 INFO L82 PathProgramCache]: Analyzing trace with hash -713964132, now seen corresponding path program 6 times [2020-10-12 10:31:34,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:34,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68435338] [2020-10-12 10:31:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 10:31:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:36,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:31:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:31:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:31:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:31:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 10:31:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:31:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:31:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 10:31:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 10:31:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 24 proven. 457 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-12 10:31:36,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68435338] [2020-10-12 10:31:36,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:36,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:31:36,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735092757] [2020-10-12 10:31:36,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:31:36,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:31:36,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:31:36,237 INFO L87 Difference]: Start difference. First operand 341 states and 371 transitions. Second operand 28 states. [2020-10-12 10:31:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:41,409 INFO L93 Difference]: Finished difference Result 406 states and 448 transitions. [2020-10-12 10:31:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-12 10:31:41,410 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2020-10-12 10:31:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:41,412 INFO L225 Difference]: With dead ends: 406 [2020-10-12 10:31:41,412 INFO L226 Difference]: Without dead ends: 404 [2020-10-12 10:31:41,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=447, Invalid=5873, Unknown=0, NotChecked=0, Total=6320 [2020-10-12 10:31:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-12 10:31:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 350. [2020-10-12 10:31:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 10:31:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 381 transitions. [2020-10-12 10:31:41,453 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 381 transitions. Word has length 158 [2020-10-12 10:31:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:41,454 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 381 transitions. [2020-10-12 10:31:41,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:31:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 381 transitions. [2020-10-12 10:31:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 10:31:41,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:41,455 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:41,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 10:31:41,455 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:41,456 INFO L82 PathProgramCache]: Analyzing trace with hash 48514651, now seen corresponding path program 19 times [2020-10-12 10:31:41,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:41,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104954819] [2020-10-12 10:31:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 10:31:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:42,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:31:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:31:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:31:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:31:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 10:31:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:31:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:42,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:31:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 10:31:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 10:31:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-12 10:31:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:42,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:42,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 39 proven. 507 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-12 10:31:42,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104954819] [2020-10-12 10:31:42,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:42,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:31:42,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834249893] [2020-10-12 10:31:42,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:31:42,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:42,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:31:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:31:42,896 INFO L87 Difference]: Start difference. First operand 350 states and 381 transitions. Second operand 26 states. [2020-10-12 10:31:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:48,169 INFO L93 Difference]: Finished difference Result 429 states and 474 transitions. [2020-10-12 10:31:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-12 10:31:48,171 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 167 [2020-10-12 10:31:48,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:48,174 INFO L225 Difference]: With dead ends: 429 [2020-10-12 10:31:48,174 INFO L226 Difference]: Without dead ends: 413 [2020-10-12 10:31:48,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=503, Invalid=7153, Unknown=0, NotChecked=0, Total=7656 [2020-10-12 10:31:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-12 10:31:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 355. [2020-10-12 10:31:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-12 10:31:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 387 transitions. [2020-10-12 10:31:48,226 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 387 transitions. Word has length 167 [2020-10-12 10:31:48,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:48,227 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 387 transitions. [2020-10-12 10:31:48,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:31:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 387 transitions. [2020-10-12 10:31:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 10:31:48,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:48,228 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:48,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 10:31:48,229 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:48,229 INFO L82 PathProgramCache]: Analyzing trace with hash 474017909, now seen corresponding path program 10 times [2020-10-12 10:31:48,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:48,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102223006] [2020-10-12 10:31:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-12 10:31:48,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-12 10:31:48,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 10:31:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 10:31:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:49,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:49,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:31:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:31:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:31:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:31:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 10:31:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:31:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:31:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 10:31:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 10:31:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-12 10:31:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:49,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:49,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:49,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:49,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:49,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:49,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:49,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 26 proven. 520 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-12 10:31:49,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102223006] [2020-10-12 10:31:49,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:49,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:31:49,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974608048] [2020-10-12 10:31:49,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:31:49,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:49,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:31:49,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:31:49,851 INFO L87 Difference]: Start difference. First operand 355 states and 387 transitions. Second operand 28 states. [2020-10-12 10:31:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:56,380 INFO L93 Difference]: Finished difference Result 425 states and 470 transitions. [2020-10-12 10:31:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-12 10:31:56,382 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 167 [2020-10-12 10:31:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:56,385 INFO L225 Difference]: With dead ends: 425 [2020-10-12 10:31:56,385 INFO L226 Difference]: Without dead ends: 423 [2020-10-12 10:31:56,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=483, Invalid=6999, Unknown=0, NotChecked=0, Total=7482 [2020-10-12 10:31:56,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-12 10:31:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 369. [2020-10-12 10:31:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-12 10:31:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 403 transitions. [2020-10-12 10:31:56,440 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 403 transitions. Word has length 167 [2020-10-12 10:31:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:56,441 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 403 transitions. [2020-10-12 10:31:56,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:31:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 403 transitions. [2020-10-12 10:31:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 10:31:56,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:56,442 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:56,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 10:31:56,443 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:56,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:56,443 INFO L82 PathProgramCache]: Analyzing trace with hash 266288060, now seen corresponding path program 20 times [2020-10-12 10:31:56,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:56,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055112406] [2020-10-12 10:31:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:57,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-12 10:31:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:58,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:58,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:58,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:58,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:31:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:58,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:31:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:31:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:31:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:31:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:31:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 10:31:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 10:31:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 10:31:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 10:31:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-12 10:31:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-12 10:31:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 10:31:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 525 proven. 91 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-12 10:31:59,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055112406] [2020-10-12 10:31:59,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:59,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 10:31:59,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863760587] [2020-10-12 10:31:59,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 10:31:59,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:59,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 10:31:59,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:31:59,090 INFO L87 Difference]: Start difference. First operand 369 states and 403 transitions. Second operand 30 states. [2020-10-12 10:32:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:02,483 INFO L93 Difference]: Finished difference Result 671 states and 737 transitions. [2020-10-12 10:32:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 10:32:02,485 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 176 [2020-10-12 10:32:02,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:02,487 INFO L225 Difference]: With dead ends: 671 [2020-10-12 10:32:02,487 INFO L226 Difference]: Without dead ends: 390 [2020-10-12 10:32:02,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=613, Invalid=2809, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 10:32:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-12 10:32:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 381. [2020-10-12 10:32:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-12 10:32:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 415 transitions. [2020-10-12 10:32:02,536 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 415 transitions. Word has length 176 [2020-10-12 10:32:02,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:02,536 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 415 transitions. [2020-10-12 10:32:02,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 10:32:02,536 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 415 transitions. [2020-10-12 10:32:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 10:32:02,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:02,538 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:02,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 10:32:02,539 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:02,540 INFO L82 PathProgramCache]: Analyzing trace with hash 868439267, now seen corresponding path program 21 times [2020-10-12 10:32:02,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:02,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016620432] [2020-10-12 10:32:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 10:32:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:32:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 10:32:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:04,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:32:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:32:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:04,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:32:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:04,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:32:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:32:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:32:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:32:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-12 10:32:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 10:32:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 10:32:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 10:32:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-12 10:32:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 10:32:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-12 10:32:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 10:32:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:04,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:04,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:04,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:04,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:04,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 42 proven. 603 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-12 10:32:04,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016620432] [2020-10-12 10:32:04,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:04,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 10:32:04,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257232639] [2020-10-12 10:32:04,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 10:32:04,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:04,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 10:32:04,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=753, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:32:04,378 INFO L87 Difference]: Start difference. First operand 381 states and 415 transitions. Second operand 29 states. [2020-10-12 10:32:11,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:11,832 INFO L93 Difference]: Finished difference Result 469 states and 521 transitions. [2020-10-12 10:32:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-12 10:32:11,834 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 180 [2020-10-12 10:32:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:11,838 INFO L225 Difference]: With dead ends: 469 [2020-10-12 10:32:11,838 INFO L226 Difference]: Without dead ends: 453 [2020-10-12 10:32:11,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2405 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=622, Invalid=8690, Unknown=0, NotChecked=0, Total=9312 [2020-10-12 10:32:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-12 10:32:11,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 392. [2020-10-12 10:32:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-12 10:32:11,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 430 transitions. [2020-10-12 10:32:11,895 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 430 transitions. Word has length 180 [2020-10-12 10:32:11,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:11,895 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 430 transitions. [2020-10-12 10:32:11,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 10:32:11,895 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 430 transitions. [2020-10-12 10:32:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 10:32:11,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:11,896 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 13, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:11,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 10:32:11,896 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash 130057571, now seen corresponding path program 13 times [2020-10-12 10:32:11,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:11,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764102036] [2020-10-12 10:32:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:16,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 10:32:16,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 10:32:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 10:32:16,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-12 10:32:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:32:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-12 10:32:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:18,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:32:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:18,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:18,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:32:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:32:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:32:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:32:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:32:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:32:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-12 10:32:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 10:32:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 10:32:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 10:32:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-12 10:32:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 10:32:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-12 10:32:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 10:32:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 190 proven. 487 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-12 10:32:18,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764102036] [2020-10-12 10:32:18,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:18,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 10:32:18,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278840612] [2020-10-12 10:32:18,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 10:32:18,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:18,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 10:32:18,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=923, Unknown=0, NotChecked=0, Total=992 [2020-10-12 10:32:18,623 INFO L87 Difference]: Start difference. First operand 392 states and 430 transitions. Second operand 32 states.