/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:11:26,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:11:26,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:11:26,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:11:26,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:11:26,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:11:26,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:11:26,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:11:26,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:11:26,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:11:26,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:11:26,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:11:26,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:11:26,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:11:26,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:11:26,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:11:26,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:11:26,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:11:26,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:11:26,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:11:26,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:11:26,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:11:26,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:11:26,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:11:26,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:11:26,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:11:26,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:11:26,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:11:26,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:11:26,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:11:26,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:11:26,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:11:26,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:11:26,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:11:26,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:11:26,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:11:26,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:11:26,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:11:26,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:11:26,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:11:26,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:11:26,789 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 [2020-09-24 18:11:26,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:11:26,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:11:26,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:11:26,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:11:26,819 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:11:26,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:11:26,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:11:26,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:11:26,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:11:26,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:11:26,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:11:26,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:11:26,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:11:26,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:11:26,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:11:26,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:11:26,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:11:26,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:11:26,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:11:26,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:11:26,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:11:26,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:26,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:11:26,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:11:26,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:11:26,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:11:26,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:11:26,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:11:26,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:11:26,826 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:11:27,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:11:27,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:11:27,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:11:27,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:11:27,339 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:11:27,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-24 18:11:27,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/233cd2ac7/9f995e41f9594e2f92e7fcd6acfcc757/FLAGfbf232940 [2020-09-24 18:11:27,961 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:11:27,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-09-24 18:11:27,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/233cd2ac7/9f995e41f9594e2f92e7fcd6acfcc757/FLAGfbf232940 [2020-09-24 18:11:28,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/233cd2ac7/9f995e41f9594e2f92e7fcd6acfcc757 [2020-09-24 18:11:28,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:11:28,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:11:28,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:28,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:11:28,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:11:28,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28, skipping insertion in model container [2020-09-24 18:11:28,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:11:28,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:11:28,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:28,650 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:11:28,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:28,819 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:11:28,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28 WrapperNode [2020-09-24 18:11:28,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:28,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:11:28,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:11:28,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:11:28,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (1/1) ... [2020-09-24 18:11:28,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:11:28,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:11:28,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:11:28,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:11:28,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (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 [2020-09-24 18:11:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:11:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:11:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:11:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-24 18:11:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-24 18:11:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-24 18:11:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:11:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:11:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:11:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 18:11:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:11:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-24 18:11:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-24 18:11:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-24 18:11:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:11:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:11:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:11:29,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:11:29,479 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:11:29,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:29 BoogieIcfgContainer [2020-09-24 18:11:29,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:11:29,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:11:29,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:11:29,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:11:29,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:28" (1/3) ... [2020-09-24 18:11:29,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187b9db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:29, skipping insertion in model container [2020-09-24 18:11:29,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:28" (2/3) ... [2020-09-24 18:11:29,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187b9db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:29, skipping insertion in model container [2020-09-24 18:11:29,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:29" (3/3) ... [2020-09-24 18:11:29,501 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-09-24 18:11:29,513 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:11:29,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:11:29,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:11:29,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:11:29,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:11:29,576 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:11:29,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:11:29,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:11:29,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:11:29,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:11:29,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:11:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-24 18:11:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 18:11:29,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:29,616 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 18:11:29,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:29,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:29,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-24 18:11:29,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:29,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134934526] [2020-09-24 18:11:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:30,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:30,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:31,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 18:11:31,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:11:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-09-24 18:11:31,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 18:11:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:11:31,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:11:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:31,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:31,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:31,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:31,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:31,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:31,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:31,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:31,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:31,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:31,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:31,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:31,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:11:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:31,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:31,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:31,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:31,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:31,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:31,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 18:11:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:31,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:31,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:31,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 18:11:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:31,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:31,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:11:31,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:31,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:11:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-24 18:11:31,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134934526] [2020-09-24 18:11:31,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:31,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:11:31,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787376836] [2020-09-24 18:11:31,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:11:31,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:31,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:11:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:11:31,710 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-09-24 18:11:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:31,793 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2020-09-24 18:11:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:11:31,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-09-24 18:11:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:31,810 INFO L225 Difference]: With dead ends: 253 [2020-09-24 18:11:31,810 INFO L226 Difference]: Without dead ends: 126 [2020-09-24 18:11:31,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:11:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-24 18:11:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-24 18:11:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 18:11:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2020-09-24 18:11:31,881 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 100 [2020-09-24 18:11:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:31,890 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2020-09-24 18:11:31,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:11:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2020-09-24 18:11:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 18:11:31,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:31,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 18:11:31,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:11:31,907 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:31,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2043535721, now seen corresponding path program 1 times [2020-09-24 18:11:31,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:31,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238153099] [2020-09-24 18:11:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:31,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:32,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:36,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 18:11:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:11:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:11:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-24 18:11:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:11:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:36,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:36,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:36,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:36,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:36,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:36,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:36,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:37,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:11:37,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:37,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:11:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:37,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:37,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 18:11:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:37,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:37,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 18:11:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:37,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:37,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:37,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:37,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:11:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-24 18:11:37,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238153099] [2020-09-24 18:11:37,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:37,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:11:37,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547013574] [2020-09-24 18:11:37,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:37,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:37,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:37,059 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 4 states. [2020-09-24 18:11:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:37,103 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2020-09-24 18:11:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:11:37,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-09-24 18:11:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:37,107 INFO L225 Difference]: With dead ends: 142 [2020-09-24 18:11:37,107 INFO L226 Difference]: Without dead ends: 125 [2020-09-24 18:11:37,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-24 18:11:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-24 18:11:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-24 18:11:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2020-09-24 18:11:37,120 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 102 [2020-09-24 18:11:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:37,121 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2020-09-24 18:11:37,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:37,121 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2020-09-24 18:11:37,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 18:11:37,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:37,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 18:11:37,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:11:37,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:37,126 INFO L82 PathProgramCache]: Analyzing trace with hash -728440265, now seen corresponding path program 1 times [2020-09-24 18:11:37,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:37,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601824222] [2020-09-24 18:11:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:38,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 18:11:38,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:38,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-09-24 18:11:38,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:11:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:38,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:38,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:38,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:38,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:38,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:38,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:38,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:38,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:11:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:11:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:11:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:38,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 18:11:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:38,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:38,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:38,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:38,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:38,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 18:11:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:38,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:38,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:38,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:38,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:38,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:38,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:38,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 18:11:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:39,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:39,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:39,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:39,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 18:11:39,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601824222] [2020-09-24 18:11:39,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:39,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 18:11:39,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600129213] [2020-09-24 18:11:39,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:39,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:39,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:39,022 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand 4 states. [2020-09-24 18:11:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:39,188 INFO L93 Difference]: Finished difference Result 276 states and 324 transitions. [2020-09-24 18:11:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:11:39,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-09-24 18:11:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:39,198 INFO L225 Difference]: With dead ends: 276 [2020-09-24 18:11:39,202 INFO L226 Difference]: Without dead ends: 179 [2020-09-24 18:11:39,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-24 18:11:39,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 159. [2020-09-24 18:11:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 18:11:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2020-09-24 18:11:39,240 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 102 [2020-09-24 18:11:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:39,241 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2020-09-24 18:11:39,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2020-09-24 18:11:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 18:11:39,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:39,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:39,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:11:39,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:39,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:39,253 INFO L82 PathProgramCache]: Analyzing trace with hash 174556480, now seen corresponding path program 1 times [2020-09-24 18:11:39,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:39,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611380892] [2020-09-24 18:11:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:39,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:40,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:40,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 18:11:40,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-09-24 18:11:40,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:11:40,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:40,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:40,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:40,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:40,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:40,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:40,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:40,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:40,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:40,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:41,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:11:41,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:11:41,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:11:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:11:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:11:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 18:11:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:41,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:41,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:41,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:41,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:41,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 18:11:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:41,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:41,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:41,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:41,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 18:11:41,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611380892] [2020-09-24 18:11:41,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:41,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 18:11:41,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969636438] [2020-09-24 18:11:41,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:41,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:41,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:41,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:41,058 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 4 states. [2020-09-24 18:11:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:41,129 INFO L93 Difference]: Finished difference Result 285 states and 334 transitions. [2020-09-24 18:11:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:11:41,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-09-24 18:11:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:41,132 INFO L225 Difference]: With dead ends: 285 [2020-09-24 18:11:41,132 INFO L226 Difference]: Without dead ends: 178 [2020-09-24 18:11:41,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-24 18:11:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2020-09-24 18:11:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 18:11:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 192 transitions. [2020-09-24 18:11:41,148 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 192 transitions. Word has length 105 [2020-09-24 18:11:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:41,149 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 192 transitions. [2020-09-24 18:11:41,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 192 transitions. [2020-09-24 18:11:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 18:11:41,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:41,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:41,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:11:41,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:41,152 INFO L82 PathProgramCache]: Analyzing trace with hash 411384115, now seen corresponding path program 1 times [2020-09-24 18:11:41,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:41,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875162629] [2020-09-24 18:11:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:44,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 18:11:44,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:11:44,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2994 [2020-09-24 18:11:44,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:44,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:44,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:11:44,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:44,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:44,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:44,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:44,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 18:11:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 18:11:44,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:11:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:11:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:11:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:44,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:44,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:44,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:44,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 18:11:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:44,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:44,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 18:11:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:44,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:44,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:44,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 18:11:44,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875162629] [2020-09-24 18:11:44,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:44,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 18:11:44,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443508699] [2020-09-24 18:11:44,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:44,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:44,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:44,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:44,347 INFO L87 Difference]: Start difference. First operand 164 states and 192 transitions. Second operand 4 states. [2020-09-24 18:11:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:44,432 INFO L93 Difference]: Finished difference Result 297 states and 350 transitions. [2020-09-24 18:11:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:11:44,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-09-24 18:11:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:44,436 INFO L225 Difference]: With dead ends: 297 [2020-09-24 18:11:44,436 INFO L226 Difference]: Without dead ends: 184 [2020-09-24 18:11:44,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-09-24 18:11:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2020-09-24 18:11:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 18:11:44,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 196 transitions. [2020-09-24 18:11:44,465 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 196 transitions. Word has length 106 [2020-09-24 18:11:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:44,466 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 196 transitions. [2020-09-24 18:11:44,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 196 transitions. [2020-09-24 18:11:44,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 18:11:44,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:44,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:44,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:11:44,470 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:44,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:44,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1053175091, now seen corresponding path program 1 times [2020-09-24 18:11:44,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:44,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911343108] [2020-09-24 18:11:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:45,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:45,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 18:11:45,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-09-24 18:11:45,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:11:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:45,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:45,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:45,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:45,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:45,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:45,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:46,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:11:46,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:11:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:11:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:11:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 18:11:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:46,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:46,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:46,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 18:11:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:46,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:46,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:11:46,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 18:11:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:46,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:46,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 18:11:46,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911343108] [2020-09-24 18:11:46,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:46,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 18:11:46,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336911300] [2020-09-24 18:11:46,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:46,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:46,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:46,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:46,114 INFO L87 Difference]: Start difference. First operand 167 states and 196 transitions. Second operand 4 states. [2020-09-24 18:11:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:46,227 INFO L93 Difference]: Finished difference Result 305 states and 360 transitions. [2020-09-24 18:11:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:11:46,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-24 18:11:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:46,229 INFO L225 Difference]: With dead ends: 305 [2020-09-24 18:11:46,229 INFO L226 Difference]: Without dead ends: 174 [2020-09-24 18:11:46,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-24 18:11:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 157. [2020-09-24 18:11:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 18:11:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2020-09-24 18:11:46,252 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 107 [2020-09-24 18:11:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:46,254 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2020-09-24 18:11:46,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2020-09-24 18:11:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 18:11:46,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:46,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 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, 1, 1, 1, 1] [2020-09-24 18:11:46,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:11:46,259 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:46,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1153920056, now seen corresponding path program 1 times [2020-09-24 18:11:46,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:46,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303533833] [2020-09-24 18:11:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 18:11:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2084 [2020-09-24 18:11:48,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:11:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:48,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:48,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:48,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:48,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:11:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:11:48,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:11:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:11:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 18:11:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:48,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:11:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:48,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:48,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:48,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:11:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:48,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 18:11:48,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303533833] [2020-09-24 18:11:48,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:48,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:11:48,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081357881] [2020-09-24 18:11:48,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:11:48,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:48,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:11:48,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:48,484 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand 5 states. [2020-09-24 18:11:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:48,578 INFO L93 Difference]: Finished difference Result 304 states and 355 transitions. [2020-09-24 18:11:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:48,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-09-24 18:11:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:48,581 INFO L225 Difference]: With dead ends: 304 [2020-09-24 18:11:48,581 INFO L226 Difference]: Without dead ends: 188 [2020-09-24 18:11:48,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-24 18:11:48,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2020-09-24 18:11:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 18:11:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2020-09-24 18:11:48,591 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 110 [2020-09-24 18:11:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:48,591 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2020-09-24 18:11:48,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:11:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2020-09-24 18:11:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 18:11:48,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:48,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:48,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:11:48,594 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:48,594 INFO L82 PathProgramCache]: Analyzing trace with hash -856467222, now seen corresponding path program 1 times [2020-09-24 18:11:48,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:48,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798626218] [2020-09-24 18:11:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:50,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:50,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 18:11:50,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2094 [2020-09-24 18:11:50,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:11:50,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:50,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:50,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:50,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:50,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:50,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:50,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:50,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:50,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:50,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:11:50,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:11:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:11:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:11:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 18:11:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:50,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:50,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:50,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:50,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:50,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:11:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:50,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:50,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:50,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:50,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:50,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 18:11:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 18:11:50,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798626218] [2020-09-24 18:11:50,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:50,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:11:50,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032757780] [2020-09-24 18:11:50,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:11:50,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:50,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:11:50,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:11:50,834 INFO L87 Difference]: Start difference. First operand 167 states and 193 transitions. Second operand 5 states. [2020-09-24 18:11:50,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:50,975 INFO L93 Difference]: Finished difference Result 320 states and 375 transitions. [2020-09-24 18:11:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:11:50,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-09-24 18:11:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:50,977 INFO L225 Difference]: With dead ends: 320 [2020-09-24 18:11:50,977 INFO L226 Difference]: Without dead ends: 197 [2020-09-24 18:11:50,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-24 18:11:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 167. [2020-09-24 18:11:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 18:11:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 192 transitions. [2020-09-24 18:11:50,988 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 192 transitions. Word has length 110 [2020-09-24 18:11:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:50,988 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 192 transitions. [2020-09-24 18:11:50,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:11:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 192 transitions. [2020-09-24 18:11:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 18:11:50,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:50,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 18:11:50,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:11:50,991 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:50,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:50,991 INFO L82 PathProgramCache]: Analyzing trace with hash -812048320, now seen corresponding path program 2 times [2020-09-24 18:11:50,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:50,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182309512] [2020-09-24 18:11:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:53,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:11:53,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2486 [2020-09-24 18:11:53,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:11:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:53,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:53,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:53,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:53,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:53,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:53,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:53,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:53,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:53,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:53,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:11:53,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:11:53,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:11:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:11:53,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:53,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 18:11:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:53,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:53,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:53,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 18:11:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:53,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:53,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:53,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:53,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:53,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:53,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:11:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:53,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:53,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:53,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 18:11:53,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182309512] [2020-09-24 18:11:53,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:53,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:11:53,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326052485] [2020-09-24 18:11:53,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:53,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:53,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:53,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:53,637 INFO L87 Difference]: Start difference. First operand 167 states and 192 transitions. Second operand 6 states. [2020-09-24 18:11:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:53,770 INFO L93 Difference]: Finished difference Result 329 states and 386 transitions. [2020-09-24 18:11:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:11:53,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-09-24 18:11:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:53,773 INFO L225 Difference]: With dead ends: 329 [2020-09-24 18:11:53,774 INFO L226 Difference]: Without dead ends: 208 [2020-09-24 18:11:53,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:11:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-24 18:11:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 177. [2020-09-24 18:11:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 18:11:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2020-09-24 18:11:53,788 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 115 [2020-09-24 18:11:53,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:53,788 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2020-09-24 18:11:53,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2020-09-24 18:11:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 18:11:53,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:53,791 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1] [2020-09-24 18:11:53,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:11:53,792 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:53,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1472531698, now seen corresponding path program 1 times [2020-09-24 18:11:53,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:53,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605211974] [2020-09-24 18:11:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:53,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 18:11:56,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:11:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2781 [2020-09-24 18:11:56,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:11:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 18:11:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:56,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:56,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:56,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:11:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:11:56,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 18:11:56,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:11:56,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 18:11:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:56,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:56,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:11:56,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 18:11:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:56,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:11:56,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:11:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:11:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:56,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:56,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:56,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:11:56,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:56,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:11:56,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:56,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:11:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-24 18:11:56,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605211974] [2020-09-24 18:11:56,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:56,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:11:56,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832173547] [2020-09-24 18:11:56,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:56,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:56,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:56,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:56,814 INFO L87 Difference]: Start difference. First operand 177 states and 205 transitions. Second operand 6 states. [2020-09-24 18:11:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:56,889 INFO L93 Difference]: Finished difference Result 217 states and 262 transitions. [2020-09-24 18:11:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:11:56,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-09-24 18:11:56,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:56,891 INFO L225 Difference]: With dead ends: 217 [2020-09-24 18:11:56,892 INFO L226 Difference]: Without dead ends: 211 [2020-09-24 18:11:56,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:11:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-24 18:11:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2020-09-24 18:11:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-24 18:11:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2020-09-24 18:11:56,903 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 115 [2020-09-24 18:11:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:56,903 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2020-09-24 18:11:56,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2020-09-24 18:11:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-24 18:11:56,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:56,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1] [2020-09-24 18:11:56,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:11:56,906 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:56,907 INFO L82 PathProgramCache]: Analyzing trace with hash 237385401, now seen corresponding path program 1 times [2020-09-24 18:11:56,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:56,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413358468] [2020-09-24 18:11:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 18:11:57,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-24 18:11:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:11:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:11:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:57,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:57,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:57,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:57,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:57,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:11:57,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:11:57,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:11:57,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:11:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 18:11:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:57,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:11:57,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:57,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:57,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:57,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 18:11:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:57,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:57,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:11:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 18:11:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:57,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:57,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:57,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:57,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:11:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 18:11:57,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413358468] [2020-09-24 18:11:57,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:11:57,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:11:57,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474092075] [2020-09-24 18:11:57,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:57,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:57,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:57,660 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand 6 states. [2020-09-24 18:11:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:57,757 INFO L93 Difference]: Finished difference Result 365 states and 449 transitions. [2020-09-24 18:11:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:11:57,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-24 18:11:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:57,760 INFO L225 Difference]: With dead ends: 365 [2020-09-24 18:11:57,760 INFO L226 Difference]: Without dead ends: 229 [2020-09-24 18:11:57,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:11:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-24 18:11:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 200. [2020-09-24 18:11:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-24 18:11:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2020-09-24 18:11:57,774 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 117 [2020-09-24 18:11:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:57,775 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2020-09-24 18:11:57,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2020-09-24 18:11:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 18:11:57,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:57,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2020-09-24 18:11:57,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:11:57,777 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:57,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1273487743, now seen corresponding path program 1 times [2020-09-24 18:11:57,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:57,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047755603] [2020-09-24 18:11:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 18:11:58,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-09-24 18:11:58,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 18:11:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:11:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:58,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:58,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:58,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:58,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:58,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:58,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:11:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:11:58,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:11:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:58,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 18:11:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:58,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:58,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 18:11:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:58,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:58,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:58,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:11:58,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:11:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:58,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:11:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-24 18:11:58,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047755603] [2020-09-24 18:11:58,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:58,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:58,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952841429] [2020-09-24 18:11:58,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:58,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:58,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:58,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:58,652 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand 6 states. [2020-09-24 18:11:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:58,728 INFO L93 Difference]: Finished difference Result 223 states and 261 transitions. [2020-09-24 18:11:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:11:58,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-09-24 18:11:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:58,730 INFO L225 Difference]: With dead ends: 223 [2020-09-24 18:11:58,730 INFO L226 Difference]: Without dead ends: 216 [2020-09-24 18:11:58,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:11:58,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-24 18:11:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2020-09-24 18:11:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-24 18:11:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 250 transitions. [2020-09-24 18:11:58,742 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 250 transitions. Word has length 122 [2020-09-24 18:11:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:58,742 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 250 transitions. [2020-09-24 18:11:58,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 250 transitions. [2020-09-24 18:11:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 18:11:58,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:58,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2020-09-24 18:11:58,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:11:58,745 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:58,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:58,746 INFO L82 PathProgramCache]: Analyzing trace with hash -273081057, now seen corresponding path program 1 times [2020-09-24 18:11:58,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:58,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416328446] [2020-09-24 18:11:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 18:11:59,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-09-24 18:11:59,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:11:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-24 18:11:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:11:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:11:59,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:59,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:11:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:59,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:59,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:11:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:11:59,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:11:59,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:11:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:59,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:59,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 18:11:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:11:59,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 18:11:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:59,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:59,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:11:59,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-24 18:11:59,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416328446] [2020-09-24 18:11:59,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:59,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:59,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420654926] [2020-09-24 18:11:59,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:59,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:59,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:59,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:59,533 INFO L87 Difference]: Start difference. First operand 212 states and 250 transitions. Second operand 6 states. [2020-09-24 18:11:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:59,575 INFO L93 Difference]: Finished difference Result 218 states and 255 transitions. [2020-09-24 18:11:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:59,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-09-24 18:11:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:59,577 INFO L225 Difference]: With dead ends: 218 [2020-09-24 18:11:59,577 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 18:11:59,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:11:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 18:11:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-09-24 18:11:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-24 18:11:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 241 transitions. [2020-09-24 18:11:59,587 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 241 transitions. Word has length 122 [2020-09-24 18:11:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:59,587 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 241 transitions. [2020-09-24 18:11:59,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 241 transitions. [2020-09-24 18:11:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 18:11:59,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:59,590 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:11:59,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 18:11:59,590 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:59,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:59,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2087844245, now seen corresponding path program 1 times [2020-09-24 18:11:59,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:59,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462943671] [2020-09-24 18:11:59,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 18:12:04,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:12:04,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:12:04,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:12:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:12:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:04,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:12:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:12:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:12:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:12:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:12:04,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 18:12:04,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:12:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:12:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:12:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:12:04,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:04,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:12:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 18:12:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:12:04,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:04,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:12:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 18:12:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:04,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:04,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:12:04,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:04,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:12:04,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 18:12:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:12:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 18:12:04,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462943671] [2020-09-24 18:12:04,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:04,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:12:04,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713638957] [2020-09-24 18:12:04,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:12:04,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:04,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:12:04,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:12:04,853 INFO L87 Difference]: Start difference. First operand 206 states and 241 transitions. Second operand 7 states. [2020-09-24 18:12:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:05,061 INFO L93 Difference]: Finished difference Result 412 states and 505 transitions. [2020-09-24 18:12:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:12:05,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-09-24 18:12:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:05,064 INFO L225 Difference]: With dead ends: 412 [2020-09-24 18:12:05,064 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 18:12:05,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:12:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 18:12:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 216. [2020-09-24 18:12:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-24 18:12:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 254 transitions. [2020-09-24 18:12:05,092 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 254 transitions. Word has length 131 [2020-09-24 18:12:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:05,093 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 254 transitions. [2020-09-24 18:12:05,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:12:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 254 transitions. [2020-09-24 18:12:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 18:12:05,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:05,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:12:05,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 18:12:05,098 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:05,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:05,099 INFO L82 PathProgramCache]: Analyzing trace with hash -648050269, now seen corresponding path program 1 times [2020-09-24 18:12:05,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:05,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422373789] [2020-09-24 18:12:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:06,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 18:12:10,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:12:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:12:10,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:12:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:12:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:12:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:12:10,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:10,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 18:12:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:12:10,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:12:10,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:12:10,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:10,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:12:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:12:10,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:12:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:12:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:12:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:12:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 18:12:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:12:10,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:12:10,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:12:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 18:12:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:12:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:12:10,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:12:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 18:12:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:12:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:12:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:12:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:12:10,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:12:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:12:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 18:12:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:12:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:12:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 18:12:10,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422373789] [2020-09-24 18:12:10,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:12:10,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:12:10,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135115140] [2020-09-24 18:12:10,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:12:10,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:12:10,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:12:10,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:12:10,356 INFO L87 Difference]: Start difference. First operand 216 states and 254 transitions. Second operand 7 states. [2020-09-24 18:12:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:12:10,608 INFO L93 Difference]: Finished difference Result 413 states and 507 transitions. [2020-09-24 18:12:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:12:10,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-09-24 18:12:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:12:10,611 INFO L225 Difference]: With dead ends: 413 [2020-09-24 18:12:10,611 INFO L226 Difference]: Without dead ends: 256 [2020-09-24 18:12:10,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:12:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-24 18:12:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 216. [2020-09-24 18:12:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-24 18:12:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 252 transitions. [2020-09-24 18:12:10,624 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 252 transitions. Word has length 131 [2020-09-24 18:12:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:12:10,625 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 252 transitions. [2020-09-24 18:12:10,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:12:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 252 transitions. [2020-09-24 18:12:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 18:12:10,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:12:10,627 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-09-24 18:12:10,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 18:12:10,627 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:12:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:12:10,628 INFO L82 PathProgramCache]: Analyzing trace with hash -911828339, now seen corresponding path program 2 times [2020-09-24 18:12:10,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:12:10,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061566267] [2020-09-24 18:12:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:12:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:12:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:11,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:12:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking...