/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/heapsort.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:50:48,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:50:48,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:50:48,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:50:48,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:50:48,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:50:48,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:50:48,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:50:48,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:50:48,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:50:48,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:50:48,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:50:48,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:50:48,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:50:48,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:50:48,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:50:48,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:50:48,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:50:48,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:50:48,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:50:48,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:50:48,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:50:48,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:50:48,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:50:48,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:50:48,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:50:48,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:50:48,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:50:48,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:50:48,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:50:48,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:50:48,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:50:48,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:50:48,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:50:48,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:50:48,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:50:48,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:50:48,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:50:48,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:50:48,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:50:48,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:50:48,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:50:48,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:50:48,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:50:48,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:50:48,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:50:48,290 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:50:48,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:50:48,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:50:48,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:50:48,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:50:48,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:50:48,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:50:48,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:50:48,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:50:48,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:50:48,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:50:48,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:50:48,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:50:48,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:50:48,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:50:48,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:50:48,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:50:48,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:50:48,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:50:48,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:50:48,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:50:48,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:50:48,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:50:48,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:50:48,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:50:48,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:50:48,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:50:48,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:50:48,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:50:48,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:50:48,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:50:48,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/heapsort.i [2020-10-13 10:50:48,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e8e27f3/9650ee73fb6a4b3abc415ffe1c94e6f6/FLAGf34552ec3 [2020-10-13 10:50:49,163 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:50:49,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/heapsort.i [2020-10-13 10:50:49,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e8e27f3/9650ee73fb6a4b3abc415ffe1c94e6f6/FLAGf34552ec3 [2020-10-13 10:50:49,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e8e27f3/9650ee73fb6a4b3abc415ffe1c94e6f6 [2020-10-13 10:50:49,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:50:49,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:50:49,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:50:49,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:50:49,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:50:49,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1272b3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49, skipping insertion in model container [2020-10-13 10:50:49,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:50:49,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:50:49,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:50:49,758 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:50:49,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:50:49,796 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:50:49,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49 WrapperNode [2020-10-13 10:50:49,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:50:49,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:50:49,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:50:49,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:50:49,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... [2020-10-13 10:50:49,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:50:49,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:50:49,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:50:49,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:50:49,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:50:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:50:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:50:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:50:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:50:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:50:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:50:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:50:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:50:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:50:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:50:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:50:49,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:50:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:50:50,282 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:50:50,283 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 10:50:50,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:50:50 BoogieIcfgContainer [2020-10-13 10:50:50,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:50:50,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:50:50,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:50:50,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:50:50,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:50:49" (1/3) ... [2020-10-13 10:50:50,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e8e623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:50:50, skipping insertion in model container [2020-10-13 10:50:50,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:49" (2/3) ... [2020-10-13 10:50:50,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e8e623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:50:50, skipping insertion in model container [2020-10-13 10:50:50,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:50:50" (3/3) ... [2020-10-13 10:50:50,318 INFO L109 eAbstractionObserver]: Analyzing ICFG heapsort.i [2020-10-13 10:50:50,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:50:50,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:50:50,363 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:50:50,394 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:50:50,394 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:50:50,394 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:50:50,394 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:50:50,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:50:50,395 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:50:50,395 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:50:50,395 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:50:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-13 10:50:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:50:50,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:50,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:50,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:50,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:50,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1398272466, now seen corresponding path program 1 times [2020-10-13 10:50:50,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:50,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072087841] [2020-10-13 10:50:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:50,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:51,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:51,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:50:51,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:50:51,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-13 10:50:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:50:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:50:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:50:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:50:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:51,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:51,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:51,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:50:51,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:50:51,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072087841] [2020-10-13 10:50:51,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:51,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:50:51,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99701590] [2020-10-13 10:50:51,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:50:51,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:51,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:50:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:50:51,243 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-10-13 10:50:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:51,452 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-10-13 10:50:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:50:51,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 10:50:51,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:51,468 INFO L225 Difference]: With dead ends: 104 [2020-10-13 10:50:51,468 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 10:50:51,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:50:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 10:50:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 40. [2020-10-13 10:50:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:50:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2020-10-13 10:50:51,535 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 60 transitions. Word has length 14 [2020-10-13 10:50:51,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:51,536 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 60 transitions. [2020-10-13 10:50:51,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:50:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 60 transitions. [2020-10-13 10:50:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:50:51,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:51,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:51,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:50:51,539 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:51,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:51,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1393535697, now seen corresponding path program 1 times [2020-10-13 10:50:51,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:51,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842112516] [2020-10-13 10:50:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:50:51,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:50:51,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 10:50:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:50:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:50:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:50:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:51,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:50:51,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842112516] [2020-10-13 10:50:51,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:51,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:50:51,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844408195] [2020-10-13 10:50:51,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:50:51,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:51,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:50:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:50:51,782 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 5 states. [2020-10-13 10:50:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:52,300 INFO L93 Difference]: Finished difference Result 176 states and 291 transitions. [2020-10-13 10:50:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:50:52,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-13 10:50:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:52,305 INFO L225 Difference]: With dead ends: 176 [2020-10-13 10:50:52,308 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 10:50:52,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:50:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 10:50:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 87. [2020-10-13 10:50:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 10:50:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 142 transitions. [2020-10-13 10:50:52,387 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 142 transitions. Word has length 14 [2020-10-13 10:50:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:52,387 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 142 transitions. [2020-10-13 10:50:52,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:50:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 142 transitions. [2020-10-13 10:50:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:50:52,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:52,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:52,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:50:52,390 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:52,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1431966087, now seen corresponding path program 1 times [2020-10-13 10:50:52,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:52,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259284852] [2020-10-13 10:50:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:52,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:50:52,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:50:52,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 10:50:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:50:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:50:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:50:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:52,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:52,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:52,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:52,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:50:52,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:50:52,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259284852] [2020-10-13 10:50:52,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:52,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:50:52,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869105149] [2020-10-13 10:50:52,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:50:52,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:52,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:50:52,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:50:52,726 INFO L87 Difference]: Start difference. First operand 87 states and 142 transitions. Second operand 6 states. [2020-10-13 10:50:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:52,924 INFO L93 Difference]: Finished difference Result 165 states and 272 transitions. [2020-10-13 10:50:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:50:52,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-13 10:50:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:52,927 INFO L225 Difference]: With dead ends: 165 [2020-10-13 10:50:52,928 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 10:50:52,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:50:52,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 10:50:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 142. [2020-10-13 10:50:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 10:50:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 238 transitions. [2020-10-13 10:50:52,969 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 238 transitions. Word has length 14 [2020-10-13 10:50:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:52,974 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 238 transitions. [2020-10-13 10:50:52,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:50:52,975 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 238 transitions. [2020-10-13 10:50:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:50:52,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:52,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:52,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:50:52,976 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1419721986, now seen corresponding path program 1 times [2020-10-13 10:50:52,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:52,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194409660] [2020-10-13 10:50:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:52,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:50:53,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:53,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 10:50:53,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:50:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:50:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:50:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:53,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:50:53,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:50:53,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194409660] [2020-10-13 10:50:53,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:53,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:50:53,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206437125] [2020-10-13 10:50:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:50:53,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:53,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:50:53,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:50:53,096 INFO L87 Difference]: Start difference. First operand 142 states and 238 transitions. Second operand 6 states. [2020-10-13 10:50:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:53,299 INFO L93 Difference]: Finished difference Result 280 states and 471 transitions. [2020-10-13 10:50:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:50:53,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-13 10:50:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:53,303 INFO L225 Difference]: With dead ends: 280 [2020-10-13 10:50:53,303 INFO L226 Difference]: Without dead ends: 278 [2020-10-13 10:50:53,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:50:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-13 10:50:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 267. [2020-10-13 10:50:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-13 10:50:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 454 transitions. [2020-10-13 10:50:53,354 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 454 transitions. Word has length 14 [2020-10-13 10:50:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:53,354 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 454 transitions. [2020-10-13 10:50:53,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:50:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 454 transitions. [2020-10-13 10:50:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:50:53,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:53,356 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:53,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:50:53,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:53,357 INFO L82 PathProgramCache]: Analyzing trace with hash -215332396, now seen corresponding path program 1 times [2020-10-13 10:50:53,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:53,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071279691] [2020-10-13 10:50:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:50:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:50:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 10:50:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:50:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:50:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:50:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:53,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:53,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:53,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:53,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:53,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:53,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:50:53,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071279691] [2020-10-13 10:50:53,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:50:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182105272] [2020-10-13 10:50:53,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:50:53,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:50:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:50:53,526 INFO L87 Difference]: Start difference. First operand 267 states and 454 transitions. Second operand 7 states. [2020-10-13 10:50:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:53,814 INFO L93 Difference]: Finished difference Result 496 states and 854 transitions. [2020-10-13 10:50:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:50:53,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-13 10:50:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:53,820 INFO L225 Difference]: With dead ends: 496 [2020-10-13 10:50:53,820 INFO L226 Difference]: Without dead ends: 494 [2020-10-13 10:50:53,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:50:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-13 10:50:53,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 449. [2020-10-13 10:50:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-13 10:50:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 787 transitions. [2020-10-13 10:50:53,887 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 787 transitions. Word has length 19 [2020-10-13 10:50:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:53,888 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 787 transitions. [2020-10-13 10:50:53,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:50:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 787 transitions. [2020-10-13 10:50:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:50:53,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:53,890 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:53,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:50:53,890 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1341683124, now seen corresponding path program 1 times [2020-10-13 10:50:53,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:53,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111413990] [2020-10-13 10:50:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:50:53,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:50:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 10:50:53,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:50:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:50:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:50:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:53,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:53,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:53,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:53,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:53,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:53,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:50:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 10:50:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:50:53,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111413990] [2020-10-13 10:50:53,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:53,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:50:53,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015237474] [2020-10-13 10:50:53,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:50:53,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:53,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:50:54,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:50:54,000 INFO L87 Difference]: Start difference. First operand 449 states and 787 transitions. Second operand 4 states. [2020-10-13 10:50:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:54,119 INFO L93 Difference]: Finished difference Result 808 states and 1414 transitions. [2020-10-13 10:50:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:50:54,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:50:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:54,127 INFO L225 Difference]: With dead ends: 808 [2020-10-13 10:50:54,127 INFO L226 Difference]: Without dead ends: 596 [2020-10-13 10:50:54,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:50:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-13 10:50:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 318. [2020-10-13 10:50:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-13 10:50:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 544 transitions. [2020-10-13 10:50:54,200 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 544 transitions. Word has length 19 [2020-10-13 10:50:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:54,200 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 544 transitions. [2020-10-13 10:50:54,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:50:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 544 transitions. [2020-10-13 10:50:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:50:54,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:54,201 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:54,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:50:54,202 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:54,202 INFO L82 PathProgramCache]: Analyzing trace with hash -802138410, now seen corresponding path program 1 times [2020-10-13 10:50:54,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:54,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476036097] [2020-10-13 10:50:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:54,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:50:54,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:50:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 10:50:54,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:50:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:50:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:50:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:54,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:54,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:54,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:54,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:50:54,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 10:50:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:54,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:50:54,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476036097] [2020-10-13 10:50:54,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:54,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:50:54,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777982246] [2020-10-13 10:50:54,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:50:54,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:50:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:50:54,399 INFO L87 Difference]: Start difference. First operand 318 states and 544 transitions. Second operand 4 states. [2020-10-13 10:50:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:54,460 INFO L93 Difference]: Finished difference Result 337 states and 559 transitions. [2020-10-13 10:50:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:50:54,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:50:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:54,464 INFO L225 Difference]: With dead ends: 337 [2020-10-13 10:50:54,464 INFO L226 Difference]: Without dead ends: 278 [2020-10-13 10:50:54,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:50:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-13 10:50:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-10-13 10:50:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-13 10:50:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 473 transitions. [2020-10-13 10:50:54,511 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 473 transitions. Word has length 19 [2020-10-13 10:50:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:54,511 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 473 transitions. [2020-10-13 10:50:54,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:50:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 473 transitions. [2020-10-13 10:50:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:50:54,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:54,517 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:54,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:50:54,517 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:54,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1823211956, now seen corresponding path program 1 times [2020-10-13 10:50:54,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:54,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571035647] [2020-10-13 10:50:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:50:54,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:50:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-13 10:50:54,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:50:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:50:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:50:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:54,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:54,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:54,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:54,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:54,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:54,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:54,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:54,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:54,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:54,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:50:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:54,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:50:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:54,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:54,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:54,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:54,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:50:54,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:54,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:50:54,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571035647] [2020-10-13 10:50:54,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:54,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:50:54,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290627676] [2020-10-13 10:50:54,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:50:54,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:54,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:50:54,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:50:54,869 INFO L87 Difference]: Start difference. First operand 278 states and 473 transitions. Second operand 6 states. [2020-10-13 10:50:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:55,092 INFO L93 Difference]: Finished difference Result 322 states and 532 transitions. [2020-10-13 10:50:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:50:55,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-13 10:50:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:55,096 INFO L225 Difference]: With dead ends: 322 [2020-10-13 10:50:55,096 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 10:50:55,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:50:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 10:50:55,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 282. [2020-10-13 10:50:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-13 10:50:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 476 transitions. [2020-10-13 10:50:55,136 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 476 transitions. Word has length 26 [2020-10-13 10:50:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:55,136 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 476 transitions. [2020-10-13 10:50:55,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:50:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 476 transitions. [2020-10-13 10:50:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:50:55,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:55,142 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:55,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:50:55,143 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1309395559, now seen corresponding path program 1 times [2020-10-13 10:50:55,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:55,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396762181] [2020-10-13 10:50:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:55,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 10:50:55,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:55,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 10:50:55,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:50:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:50:55,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:50:55,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:55,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:55,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:55,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:55,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:55,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:55,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:55,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:50:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:55,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:55,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:55,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:50:55,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:55,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:50:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:55,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:55,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:50:55,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396762181] [2020-10-13 10:50:55,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:55,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:50:55,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060401243] [2020-10-13 10:50:55,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:50:55,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:55,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:50:55,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:50:55,291 INFO L87 Difference]: Start difference. First operand 282 states and 476 transitions. Second operand 6 states. [2020-10-13 10:50:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:55,507 INFO L93 Difference]: Finished difference Result 380 states and 636 transitions. [2020-10-13 10:50:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:50:55,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-13 10:50:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:55,513 INFO L225 Difference]: With dead ends: 380 [2020-10-13 10:50:55,514 INFO L226 Difference]: Without dead ends: 378 [2020-10-13 10:50:55,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:50:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-13 10:50:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 354. [2020-10-13 10:50:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-13 10:50:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 602 transitions. [2020-10-13 10:50:55,565 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 602 transitions. Word has length 29 [2020-10-13 10:50:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:55,566 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 602 transitions. [2020-10-13 10:50:55,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:50:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 602 transitions. [2020-10-13 10:50:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:50:55,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:55,568 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:55,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:50:55,569 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:55,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1863794769, now seen corresponding path program 1 times [2020-10-13 10:50:55,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:55,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811163604] [2020-10-13 10:50:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:50:56,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:50:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-10-13 10:50:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:50:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:50:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:50:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:56,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:56,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:56,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:56,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:56,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:56,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:50:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:50:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:56,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:50:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:50:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:50:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:56,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:50:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:56,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:56,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:56,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:56,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:50:56,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811163604] [2020-10-13 10:50:56,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:50:56,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:50:56,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049525473] [2020-10-13 10:50:56,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:50:56,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:56,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:50:56,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:50:56,699 INFO L87 Difference]: Start difference. First operand 354 states and 602 transitions. Second operand 8 states. [2020-10-13 10:50:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:57,125 INFO L93 Difference]: Finished difference Result 428 states and 720 transitions. [2020-10-13 10:50:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:50:57,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-13 10:50:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:57,130 INFO L225 Difference]: With dead ends: 428 [2020-10-13 10:50:57,130 INFO L226 Difference]: Without dead ends: 426 [2020-10-13 10:50:57,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:50:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-13 10:50:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 356. [2020-10-13 10:50:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-13 10:50:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 604 transitions. [2020-10-13 10:50:57,186 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 604 transitions. Word has length 31 [2020-10-13 10:50:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:57,187 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 604 transitions. [2020-10-13 10:50:57,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:50:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 604 transitions. [2020-10-13 10:50:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:50:57,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:57,188 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:50:57,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:50:57,188 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:57,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:57,189 INFO L82 PathProgramCache]: Analyzing trace with hash -862273228, now seen corresponding path program 1 times [2020-10-13 10:50:57,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:57,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572247724] [2020-10-13 10:50:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:50:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:50:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-13 10:50:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:50:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:50:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:50:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:58,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:50:58,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:50:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:50:58,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:50:58,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:50:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:50:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:50:58,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572247724] [2020-10-13 10:50:58,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:50:58,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:50:58,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375335831] [2020-10-13 10:50:58,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:50:58,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:58,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:50:58,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:50:58,207 INFO L87 Difference]: Start difference. First operand 356 states and 604 transitions. Second operand 8 states. [2020-10-13 10:50:58,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:58,500 INFO L93 Difference]: Finished difference Result 416 states and 700 transitions. [2020-10-13 10:50:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:50:58,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-13 10:50:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:58,504 INFO L225 Difference]: With dead ends: 416 [2020-10-13 10:50:58,505 INFO L226 Difference]: Without dead ends: 414 [2020-10-13 10:50:58,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:50:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-13 10:50:58,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 356. [2020-10-13 10:50:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-13 10:50:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 604 transitions. [2020-10-13 10:50:58,574 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 604 transitions. Word has length 32 [2020-10-13 10:50:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:58,574 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 604 transitions. [2020-10-13 10:50:58,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:50:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 604 transitions. [2020-10-13 10:50:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:50:58,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:58,576 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2020-10-13 10:50:58,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:50:58,576 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:58,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1966021174, now seen corresponding path program 1 times [2020-10-13 10:50:58,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:58,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368750748] [2020-10-13 10:50:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 10:50:58,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:50:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-13 10:50:58,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:50:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 10:50:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:50:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:58,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:58,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:58,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:50:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:58,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:50:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:50:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:50:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:50:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:50:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:50:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:50:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:58,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:58,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:58,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:50:58,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:50:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 10:50:58,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368750748] [2020-10-13 10:50:58,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:50:58,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:50:58,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913949737] [2020-10-13 10:50:58,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:50:58,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:58,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:50:58,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:50:58,969 INFO L87 Difference]: Start difference. First operand 356 states and 604 transitions. Second operand 7 states. [2020-10-13 10:50:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:59,256 INFO L93 Difference]: Finished difference Result 414 states and 686 transitions. [2020-10-13 10:50:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:50:59,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-13 10:50:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:59,262 INFO L225 Difference]: With dead ends: 414 [2020-10-13 10:50:59,262 INFO L226 Difference]: Without dead ends: 412 [2020-10-13 10:50:59,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:50:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-10-13 10:50:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 364. [2020-10-13 10:50:59,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 10:50:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 620 transitions. [2020-10-13 10:50:59,319 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 620 transitions. Word has length 41 [2020-10-13 10:50:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:59,320 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 620 transitions. [2020-10-13 10:50:59,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:50:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 620 transitions. [2020-10-13 10:50:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:50:59,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:59,321 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-10-13 10:50:59,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:50:59,322 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1399054702, now seen corresponding path program 1 times [2020-10-13 10:50:59,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:59,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578451779] [2020-10-13 10:50:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:50:59,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 10:50:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:50:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 10:50:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:50:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:50:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:59,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:50:59,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:59,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:50:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:59,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:59,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:59,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:50:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:59,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:59,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:59,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:59,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:50:59,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:50:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:50:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:50:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:59,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:59,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:59,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:59,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:59,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:50:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:59,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:59,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:50:59,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:50:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:50:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:50:59,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:50:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:50:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:50:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:50:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:50:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 10:50:59,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578451779] [2020-10-13 10:50:59,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:50:59,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:50:59,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517277418] [2020-10-13 10:50:59,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:50:59,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:50:59,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:50:59,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:50:59,508 INFO L87 Difference]: Start difference. First operand 364 states and 620 transitions. Second operand 7 states. [2020-10-13 10:50:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:50:59,734 INFO L93 Difference]: Finished difference Result 374 states and 628 transitions. [2020-10-13 10:50:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:50:59,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-13 10:50:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:50:59,739 INFO L225 Difference]: With dead ends: 374 [2020-10-13 10:50:59,739 INFO L226 Difference]: Without dead ends: 372 [2020-10-13 10:50:59,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:50:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-13 10:50:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2020-10-13 10:50:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-13 10:50:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 626 transitions. [2020-10-13 10:50:59,811 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 626 transitions. Word has length 41 [2020-10-13 10:50:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:50:59,812 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 626 transitions. [2020-10-13 10:50:59,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:50:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 626 transitions. [2020-10-13 10:50:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:50:59,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:50:59,814 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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] [2020-10-13 10:50:59,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:50:59,814 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:50:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:50:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1031297962, now seen corresponding path program 1 times [2020-10-13 10:50:59,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:50:59,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193652862] [2020-10-13 10:50:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:50:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:50:59,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:50:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:51:00,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:51:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 10:51:00,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:51:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:51:00,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:51:00,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:00,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:00,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:00,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:51:00,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:00,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:00,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:51:00,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:00,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:00,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:00,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:00,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:00,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:00,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:00,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:00,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:00,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 10:51:00,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193652862] [2020-10-13 10:51:00,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:00,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:51:00,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821985384] [2020-10-13 10:51:00,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:51:00,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:00,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:51:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:51:00,168 INFO L87 Difference]: Start difference. First operand 372 states and 626 transitions. Second operand 7 states. [2020-10-13 10:51:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:00,430 INFO L93 Difference]: Finished difference Result 440 states and 730 transitions. [2020-10-13 10:51:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:51:00,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-13 10:51:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:00,435 INFO L225 Difference]: With dead ends: 440 [2020-10-13 10:51:00,435 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 10:51:00,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:51:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 10:51:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 372. [2020-10-13 10:51:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-13 10:51:00,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 626 transitions. [2020-10-13 10:51:00,493 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 626 transitions. Word has length 48 [2020-10-13 10:51:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:00,493 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 626 transitions. [2020-10-13 10:51:00,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:51:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 626 transitions. [2020-10-13 10:51:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:51:00,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:00,495 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 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, 1, 1] [2020-10-13 10:51:00,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:51:00,495 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:00,496 INFO L82 PathProgramCache]: Analyzing trace with hash -262271727, now seen corresponding path program 1 times [2020-10-13 10:51:00,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:00,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650622524] [2020-10-13 10:51:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:04,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:51:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 10:51:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 10:51:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:51:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:51:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 10:51:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:05,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:05,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:05,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:05,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:05,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:51:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:05,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:05,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:05,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:05,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:51:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:05,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:05,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:05,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:05,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:51:05,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:51:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:05,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:05,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:05,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-13 10:51:05,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650622524] [2020-10-13 10:51:05,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:05,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:51:05,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282051526] [2020-10-13 10:51:05,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:51:05,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:05,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:51:05,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:51:05,664 INFO L87 Difference]: Start difference. First operand 372 states and 626 transitions. Second operand 8 states. [2020-10-13 10:51:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:06,046 INFO L93 Difference]: Finished difference Result 436 states and 726 transitions. [2020-10-13 10:51:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:51:06,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-13 10:51:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:06,055 INFO L225 Difference]: With dead ends: 436 [2020-10-13 10:51:06,055 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 10:51:06,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 10:51:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 388. [2020-10-13 10:51:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-13 10:51:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 654 transitions. [2020-10-13 10:51:06,166 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 654 transitions. Word has length 53 [2020-10-13 10:51:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:06,166 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 654 transitions. [2020-10-13 10:51:06,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:51:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 654 transitions. [2020-10-13 10:51:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:51:06,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:06,169 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 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] [2020-10-13 10:51:06,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:51:06,169 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:06,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1323417912, now seen corresponding path program 1 times [2020-10-13 10:51:06,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:06,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32187770] [2020-10-13 10:51:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 10:51:11,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 10:51:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:51:11,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:51:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:51:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 10:51:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:11,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:11,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:51:11,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:51:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:11,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:51:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:11,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:11,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:11,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:51:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:11,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:11,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:11,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:51:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:11,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:11,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:11,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 10:51:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 10:51:11,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32187770] [2020-10-13 10:51:11,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:11,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:51:11,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638221390] [2020-10-13 10:51:11,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:51:11,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:11,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:51:11,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:51:11,300 INFO L87 Difference]: Start difference. First operand 388 states and 654 transitions. Second operand 7 states. [2020-10-13 10:51:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:11,660 INFO L93 Difference]: Finished difference Result 665 states and 1100 transitions. [2020-10-13 10:51:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:51:11,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-13 10:51:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:11,665 INFO L225 Difference]: With dead ends: 665 [2020-10-13 10:51:11,665 INFO L226 Difference]: Without dead ends: 334 [2020-10-13 10:51:11,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:51:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-13 10:51:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 304. [2020-10-13 10:51:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-13 10:51:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 494 transitions. [2020-10-13 10:51:11,747 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 494 transitions. Word has length 54 [2020-10-13 10:51:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:11,748 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 494 transitions. [2020-10-13 10:51:11,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:51:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 494 transitions. [2020-10-13 10:51:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:51:11,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:11,753 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:11,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:51:11,754 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1365572826, now seen corresponding path program 1 times [2020-10-13 10:51:11,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:11,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665027942] [2020-10-13 10:51:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:51:12,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:51:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-13 10:51:12,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:51:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:51:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 10:51:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:12,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:12,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:12,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:12,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:12,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:12,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:12,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:51:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:12,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:51:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:12,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:12,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:51:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:12,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:51:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:12,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:12,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:12,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:12,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 10:51:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:51:12,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665027942] [2020-10-13 10:51:12,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:12,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:51:12,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769081941] [2020-10-13 10:51:12,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:51:12,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:12,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:51:12,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:51:12,834 INFO L87 Difference]: Start difference. First operand 304 states and 494 transitions. Second operand 7 states. [2020-10-13 10:51:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:13,298 INFO L93 Difference]: Finished difference Result 633 states and 1026 transitions. [2020-10-13 10:51:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:51:13,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-13 10:51:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:13,303 INFO L225 Difference]: With dead ends: 633 [2020-10-13 10:51:13,303 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 10:51:13,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:51:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 10:51:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 318. [2020-10-13 10:51:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-13 10:51:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 520 transitions. [2020-10-13 10:51:13,376 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 520 transitions. Word has length 76 [2020-10-13 10:51:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:13,377 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 520 transitions. [2020-10-13 10:51:13,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:51:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 520 transitions. [2020-10-13 10:51:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:51:13,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:13,380 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:13,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:51:13,381 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:13,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash -472086488, now seen corresponding path program 1 times [2020-10-13 10:51:13,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:13,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428207961] [2020-10-13 10:51:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:51:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:51:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 10:51:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:51:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 10:51:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:13,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:51:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:51:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:51:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:51:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:51:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:51:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:51:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:13,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:51:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:13,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:13,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:13,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:13,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 10:51:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-13 10:51:13,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428207961] [2020-10-13 10:51:13,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:13,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:51:13,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812733998] [2020-10-13 10:51:13,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:51:13,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:13,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:51:13,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:51:13,689 INFO L87 Difference]: Start difference. First operand 318 states and 520 transitions. Second operand 6 states. [2020-10-13 10:51:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:13,941 INFO L93 Difference]: Finished difference Result 560 states and 898 transitions. [2020-10-13 10:51:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:51:13,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-13 10:51:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:13,944 INFO L225 Difference]: With dead ends: 560 [2020-10-13 10:51:13,944 INFO L226 Difference]: Without dead ends: 235 [2020-10-13 10:51:13,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:51:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-13 10:51:13,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 215. [2020-10-13 10:51:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-13 10:51:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 333 transitions. [2020-10-13 10:51:13,988 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 333 transitions. Word has length 76 [2020-10-13 10:51:13,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:13,988 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 333 transitions. [2020-10-13 10:51:13,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:51:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 333 transitions. [2020-10-13 10:51:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 10:51:13,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:13,997 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:13,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:51:13,997 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:13,998 INFO L82 PathProgramCache]: Analyzing trace with hash 428771510, now seen corresponding path program 1 times [2020-10-13 10:51:13,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:13,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509540055] [2020-10-13 10:51:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 10:51:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:51:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 10:51:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:51:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:51:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 10:51:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:19,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:19,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:51:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:51:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:51:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:19,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:51:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:51:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:51:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:51:19,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:51:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 10:51:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:51:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:51:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:19,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:51:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:19,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:19,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:19,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:19,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:19,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 10:51:19,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 67 proven. 20 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-10-13 10:51:19,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509540055] [2020-10-13 10:51:19,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:19,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:51:19,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400335755] [2020-10-13 10:51:19,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:51:19,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:19,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:51:19,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:19,221 INFO L87 Difference]: Start difference. First operand 215 states and 333 transitions. Second operand 11 states. [2020-10-13 10:51:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:20,743 INFO L93 Difference]: Finished difference Result 669 states and 1065 transitions. [2020-10-13 10:51:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:51:20,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-13 10:51:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:20,748 INFO L225 Difference]: With dead ends: 669 [2020-10-13 10:51:20,748 INFO L226 Difference]: Without dead ends: 415 [2020-10-13 10:51:20,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:51:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-13 10:51:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 335. [2020-10-13 10:51:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-13 10:51:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 542 transitions. [2020-10-13 10:51:20,807 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 542 transitions. Word has length 103 [2020-10-13 10:51:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:20,808 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 542 transitions. [2020-10-13 10:51:20,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:51:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 542 transitions. [2020-10-13 10:51:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 10:51:20,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:20,812 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:20,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:51:20,813 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:20,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1322257848, now seen corresponding path program 1 times [2020-10-13 10:51:20,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:20,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650366506] [2020-10-13 10:51:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 10:51:21,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:51:21,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 10:51:21,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:51:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:51:21,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 10:51:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:21,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:21,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:21,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:51:21,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:51:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:51:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:51:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:21,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:51:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:51:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:21,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:51:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:51:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:51:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 10:51:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:51:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:51:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:51:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:21,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:21,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:21,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 37 proven. 47 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-13 10:51:21,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650366506] [2020-10-13 10:51:21,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:21,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:51:21,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901589585] [2020-10-13 10:51:21,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:51:21,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:21,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:51:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:51:21,203 INFO L87 Difference]: Start difference. First operand 335 states and 542 transitions. Second operand 9 states. [2020-10-13 10:51:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:21,518 INFO L93 Difference]: Finished difference Result 389 states and 614 transitions. [2020-10-13 10:51:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:51:21,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 10:51:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:21,522 INFO L225 Difference]: With dead ends: 389 [2020-10-13 10:51:21,522 INFO L226 Difference]: Without dead ends: 387 [2020-10-13 10:51:21,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:51:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-13 10:51:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 343. [2020-10-13 10:51:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-13 10:51:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 548 transitions. [2020-10-13 10:51:21,575 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 548 transitions. Word has length 103 [2020-10-13 10:51:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:21,575 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 548 transitions. [2020-10-13 10:51:21,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:51:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 548 transitions. [2020-10-13 10:51:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 10:51:21,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:51:21,578 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:51:21,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:51:21,578 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:51:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:51:21,579 INFO L82 PathProgramCache]: Analyzing trace with hash -676082285, now seen corresponding path program 2 times [2020-10-13 10:51:21,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:51:21,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465921306] [2020-10-13 10:51:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:51:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:21,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 10:51:26,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:51:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 10:51:26,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:51:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 10:51:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 10:51:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:51:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:51:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:51:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:51:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 10:51:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:51:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:51:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:26,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:51:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:51:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:51:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 10:51:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:51:26,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:51:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:51:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:51:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:51:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:51:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 10:51:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 10:51:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:51:26,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 10:51:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 10:51:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:51:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:51:26,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:51:26,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 10:51:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 10:51:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 10:51:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:51:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:51:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:51:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:51:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:51:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:51:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:51:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:51:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:51:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:51:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:51:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2020-10-13 10:51:26,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465921306] [2020-10-13 10:51:26,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:51:26,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:51:26,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821817350] [2020-10-13 10:51:26,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:51:26,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:51:26,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:51:26,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:51:26,789 INFO L87 Difference]: Start difference. First operand 343 states and 548 transitions. Second operand 8 states. [2020-10-13 10:51:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:51:27,279 INFO L93 Difference]: Finished difference Result 413 states and 641 transitions. [2020-10-13 10:51:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:51:27,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-13 10:51:27,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:51:27,281 INFO L225 Difference]: With dead ends: 413 [2020-10-13 10:51:27,281 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 10:51:27,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:51:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 10:51:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 10:51:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 10:51:27,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 10:51:27,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2020-10-13 10:51:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:51:27,286 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 10:51:27,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:51:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 10:51:27,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 10:51:27,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:51:27,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 10:51:27,772 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 50 [2020-10-13 10:51:27,894 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 65 [2020-10-13 10:51:28,136 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 61 [2020-10-13 10:51:28,761 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-10-13 10:51:28,938 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 63 [2020-10-13 10:51:29,268 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-10-13 10:51:30,019 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 162 [2020-10-13 10:51:30,242 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 159 [2020-10-13 10:51:30,487 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2020-10-13 10:51:31,360 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 22 [2020-10-13 10:51:32,265 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 22 [2020-10-13 10:51:32,474 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 19 [2020-10-13 10:51:33,628 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 30 [2020-10-13 10:51:34,651 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-10-13 10:51:34,655 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-13 10:51:34,655 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:51:34,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:51:34,656 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 10:51:34,656 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 10:51:34,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 10:51:34,656 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-13 10:51:34,656 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-13 10:51:34,656 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-13 10:51:34,657 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-13 10:51:34,657 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (* 2 main_~l~0) main_~r~0) (<= main_~j~0 main_~r~0) (<= .cse0 main_~j~0) (<= 1 main_~l~0) (<= main_~j~0 .cse0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~r~0 main_~n~0) (<= (+ main_~i~0 1) main_~j~0))) [2020-10-13 10:51:34,657 INFO L264 CegarLoopResult]: At program point L27-2(lines 27 47) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse0 (<= .cse4 main_~j~0)) (.cse1 (or (<= main_~j~0 .cse4) (< main_~j~0 1))) (.cse2 (<= main_~r~0 main_~n~0))) (or (and (<= (* 2 main_~l~0) main_~r~0) (<= 1 main_~l~0) .cse0 (<= main_~i~0 main_~n~0) (<= 2 main_~j~0) .cse1 .cse2) (let ((.cse3 (+ main_~r~0 1))) (and .cse0 (<= 2 main_~r~0) (<= main_~l~0 1) (<= .cse3 (* 4 main_~l~0)) .cse1 .cse2 (<= .cse3 main_~j~0)))))) [2020-10-13 10:51:34,658 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 59) no Hoare annotation was computed. [2020-10-13 10:51:34,658 INFO L268 CegarLoopResult]: For program point L27-3(lines 24 57) no Hoare annotation was computed. [2020-10-13 10:51:34,658 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-10-13 10:51:34,658 INFO L268 CegarLoopResult]: For program point L48-1(lines 13 59) no Hoare annotation was computed. [2020-10-13 10:51:34,658 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-10-13 10:51:34,659 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= (* 2 main_~l~0) main_~r~0) (<= 1 main_~l~0) (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~i~0) (<= main_~j~0 main_~n~0) (<= main_~r~0 main_~n~0)) [2020-10-13 10:51:34,659 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-13 10:51:34,659 INFO L268 CegarLoopResult]: For program point L28(lines 28 35) no Hoare annotation was computed. [2020-10-13 10:51:34,659 INFO L264 CegarLoopResult]: At program point L28-1(lines 28 35) the Hoare annotation is: (and (<= (* 2 main_~l~0) main_~r~0) (<= 1 main_~l~0) (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~i~0) (<= main_~j~0 main_~n~0) (<= main_~r~0 main_~n~0)) [2020-10-13 10:51:34,659 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 57) no Hoare annotation was computed. [2020-10-13 10:51:34,659 INFO L264 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (let ((.cse0 (<= (* 2 main_~i~0) main_~j~0)) (.cse1 (<= 1 main_~i~0)) (.cse3 (<= main_~l~0 1)) (.cse2 (<= 2 main_~r~0)) (.cse4 (<= main_~r~0 main_~n~0))) (or (and (<= 1 main_~l~0) .cse0 .cse1 .cse2 .cse3 (<= main_~i~0 main_~n~0) .cse4) (and .cse0 .cse1 .cse3 .cse2 (<= (+ main_~r~0 1) (* 4 main_~l~0)) .cse4))) [2020-10-13 10:51:34,660 INFO L264 CegarLoopResult]: At program point L53-1(line 53) the Hoare annotation is: (let ((.cse0 (<= (* 2 main_~i~0) main_~j~0)) (.cse1 (<= 1 main_~i~0)) (.cse3 (<= main_~l~0 1)) (.cse2 (<= 2 main_~r~0)) (.cse4 (<= main_~r~0 main_~n~0))) (or (and (<= 1 main_~l~0) .cse0 .cse1 (<= main_~i~0 main_~n~0) .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse3 .cse2 (<= (+ main_~r~0 1) (* 4 main_~l~0)) .cse4))) [2020-10-13 10:51:34,660 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (* 2 main_~l~0))) (and (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~i~0) (<= main_~i~0 main_~n~0) (<= .cse0 main_~n~0) (<= 2 main_~l~0) (<= main_~r~0 main_~n~0) (<= .cse0 (+ main_~r~0 2)))) [2020-10-13 10:51:34,660 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-10-13 10:51:34,660 INFO L264 CegarLoopResult]: At program point L49-1(line 49) the Hoare annotation is: (let ((.cse0 (* 2 main_~l~0))) (and (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~i~0) (<= main_~i~0 main_~n~0) (<= .cse0 main_~n~0) (<= 2 main_~l~0) (<= main_~r~0 main_~n~0) (<= .cse0 (+ main_~r~0 2)))) [2020-10-13 10:51:34,660 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= (* 2 main_~l~0) main_~r~0) (<= 1 main_~l~0) (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~i~0) (<= main_~j~0 main_~n~0) (<= main_~r~0 main_~n~0)) [2020-10-13 10:51:34,660 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (* 2 main_~l~0) main_~r~0) (<= 1 main_~l~0) (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~i~0) (<= main_~j~0 main_~n~0) (<= main_~r~0 main_~n~0)) [2020-10-13 10:51:34,661 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-10-13 10:51:34,661 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-10-13 10:51:34,661 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (* 2 main_~l~0) main_~r~0) (<= main_~j~0 main_~r~0) (<= .cse0 main_~j~0) (<= 1 main_~l~0) (<= main_~j~0 .cse0) (<= (+ main_~j~0 1) main_~n~0) (<= 2 main_~j~0) (<= main_~r~0 main_~n~0))) [2020-10-13 10:51:34,661 INFO L264 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (* 2 main_~l~0) main_~r~0) (<= main_~j~0 main_~r~0) (<= .cse0 main_~j~0) (<= 1 main_~l~0) (<= main_~j~0 .cse0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~r~0 main_~n~0) (<= (+ main_~i~0 1) main_~j~0))) [2020-10-13 10:51:34,661 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-10-13 10:51:34,661 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-10-13 10:51:34,661 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 59) no Hoare annotation was computed. [2020-10-13 10:51:34,661 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (<= (* 2 main_~l~0) main_~r~0) (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~l~0) (<= 1 main_~i~0) (<= main_~j~0 main_~n~0) (<= main_~r~0 main_~n~0)) [2020-10-13 10:51:34,662 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-10-13 10:51:34,662 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (* 2 main_~l~0) main_~r~0) (<= main_~j~0 main_~r~0) (<= .cse0 main_~j~0) (<= 1 main_~l~0) (<= main_~j~0 .cse0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~r~0 main_~n~0) (<= (+ main_~i~0 1) main_~j~0))) [2020-10-13 10:51:34,662 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 59) the Hoare annotation is: true [2020-10-13 10:51:34,662 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (<= (* 2 main_~l~0) main_~r~0) (<= (* 2 main_~i~0) main_~j~0) (<= 1 main_~l~0) (<= 1 main_~i~0) (<= main_~j~0 main_~n~0) (<= main_~r~0 main_~n~0)) [2020-10-13 10:51:34,662 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-13 10:51:34,662 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-13 10:51:34,662 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-13 10:51:34,663 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-13 10:51:34,663 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-13 10:51:34,663 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-13 10:51:34,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:51:34 BoogieIcfgContainer [2020-10-13 10:51:34,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:51:34,684 INFO L168 Benchmark]: Toolchain (without parser) took 45146.90 ms. Allocated memory was 147.8 MB in the beginning and 636.5 MB in the end (delta: 488.6 MB). Free memory was 104.1 MB in the beginning and 189.4 MB in the end (delta: -85.4 MB). Peak memory consumption was 489.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:51:34,684 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:51:34,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.06 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 93.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:51:34,686 INFO L168 Benchmark]: Boogie Preprocessor took 128.96 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:51:34,686 INFO L168 Benchmark]: RCFGBuilder took 368.89 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 164.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:51:34,687 INFO L168 Benchmark]: TraceAbstraction took 44384.57 ms. Allocated memory was 203.9 MB in the beginning and 636.5 MB in the end (delta: 432.5 MB). Free memory was 164.4 MB in the beginning and 189.4 MB in the end (delta: -25.0 MB). Peak memory consumption was 493.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:51:34,690 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.06 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 93.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.96 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.89 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 164.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44384.57 ms. Allocated memory was 203.9 MB in the beginning and 636.5 MB in the end (delta: 432.5 MB). Free memory was 164.4 MB in the beginning and 189.4 MB in the end (delta: -25.0 MB). Peak memory consumption was 493.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((2 * l <= r && 1 <= l) && 2 * i <= j) && i <= n) && 2 <= j) && (j <= 2 * i || j < 1)) && r <= n) || ((((((2 * i <= j && 2 <= r) && l <= 1) && r + 1 <= 4 * l) && (j <= 2 * i || j < 1)) && r <= n) && r + 1 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.8s, OverallIterations: 21, TraceHistogramMax: 18, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1299 SDtfs, 755 SDslu, 3706 SDs, 0 SdLazy, 4377 SolverSat, 999 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 469 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 1001 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 1003 PreInvPairs, 1292 NumberOfFragments, 510 HoareAnnotationTreeSize, 1003 FomulaSimplifications, 13399097850 FormulaSimplificationTreeSizeReduction, 2.9s HoareSimplificationTime, 20 FomulaSimplificationsInter, 1001917959 FormulaSimplificationTreeSizeReductionInter, 4.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 941 NumberOfCodeBlocks, 941 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 920 ConstructedInterpolants, 0 QuantifiedInterpolants, 129390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 2279/2446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...