/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:32:26,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:32:26,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:32:26,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:32:26,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:32:26,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:32:26,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:32:26,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:32:26,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:32:26,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:32:26,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:32:26,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:32:26,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:32:26,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:32:26,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:32:26,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:32:26,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:32:26,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:32:26,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:32:26,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:32:26,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:32:26,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:32:26,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:32:26,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:32:26,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:32:26,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:32:26,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:32:26,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:32:26,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:32:26,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:32:26,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:32:26,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:32:26,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:32:26,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:32:26,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:32:26,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:32:26,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:32:26,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:32:26,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:32:26,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:32:26,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:32:26,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:32:26,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:32:26,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:32:26,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:32:26,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:32:26,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:32:26,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:32:26,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:32:26,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:32:26,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:32:26,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:32:26,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:32:26,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:32:26,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:32:26,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:32:26,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:32:26,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:32:26,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:32:26,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:32:26,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:32:26,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:32:26,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:32:26,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:32:26,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:32:26,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:32:26,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:32:26,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:32:26,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:32:26,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:32:26,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:32:26,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:32:26,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:32:26,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:32:26,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:32:27,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:32:27,001 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:32:27,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i [2020-10-14 23:32:27,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e91f5b44/4a7a4073eaf64629a0d6e0d538361e4c/FLAG468ee67cf [2020-10-14 23:32:27,629 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:32:27,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i [2020-10-14 23:32:27,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e91f5b44/4a7a4073eaf64629a0d6e0d538361e4c/FLAG468ee67cf [2020-10-14 23:32:27,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e91f5b44/4a7a4073eaf64629a0d6e0d538361e4c [2020-10-14 23:32:27,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:32:27,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:32:27,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:32:27,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:32:27,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:32:27,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:32:27" (1/1) ... [2020-10-14 23:32:27,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b809082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:27, skipping insertion in model container [2020-10-14 23:32:27,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:32:27" (1/1) ... [2020-10-14 23:32:27,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:32:28,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:32:28,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:32:28,451 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:32:28,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:32:28,562 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:32:28,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28 WrapperNode [2020-10-14 23:32:28,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:32:28,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:32:28,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:32:28,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:32:28,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (1/1) ... [2020-10-14 23:32:28,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (1/1) ... [2020-10-14 23:32:28,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (1/1) ... [2020-10-14 23:32:28,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (1/1) ... [2020-10-14 23:32:28,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (1/1) ... [2020-10-14 23:32:28,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (1/1) ... [2020-10-14 23:32:28,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (1/1) ... [2020-10-14 23:32:28,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:32:28,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:32:28,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:32:28,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:32:28,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (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 [2020-10-14 23:32:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:32:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:32:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:32:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:32:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:32:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 23:32:28,730 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-14 23:32:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 23:32:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:32:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:32:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:32:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:32:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:32:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:32:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:32:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:32:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:32:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:32:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:32:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:32:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:32:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:32:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:32:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:32:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:32:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:32:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:32:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:32:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:32:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:32:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:32:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:32:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:32:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:32:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:32:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:32:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:32:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:32:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:32:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:32:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:32:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:32:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:32:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:32:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:32:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:32:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:32:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:32:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:32:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:32:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:32:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:32:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:32:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:32:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:32:28,738 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:32:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:32:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:32:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:32:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:32:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:32:28,739 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:32:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:32:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:32:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:32:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:32:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:32:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:32:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:32:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:32:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:32:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:32:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:32:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:32:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:32:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:32:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:32:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:32:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:32:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:32:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:32:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:32:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:32:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:32:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:32:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:32:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:32:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:32:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:32:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:32:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:32:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:32:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 23:32:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:32:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:32:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-14 23:32:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:32:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 23:32:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:32:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:32:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:32:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:32:29,086 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:32:29,232 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:32:29,232 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 23:32:29,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:32:29 BoogieIcfgContainer [2020-10-14 23:32:29,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:32:29,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:32:29,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:32:29,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:32:29,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:32:27" (1/3) ... [2020-10-14 23:32:29,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f87ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:32:29, skipping insertion in model container [2020-10-14 23:32:29,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:32:28" (2/3) ... [2020-10-14 23:32:29,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f87ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:32:29, skipping insertion in model container [2020-10-14 23:32:29,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:32:29" (3/3) ... [2020-10-14 23:32:29,252 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-2.i [2020-10-14 23:32:29,260 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:32:29,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:32:29,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:32:29,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:32:29,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:32:29,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:32:29,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:32:29,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:32:29,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:32:29,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:32:29,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:32:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-14 23:32:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:32:29,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:29,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:29,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:29,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1666427650, now seen corresponding path program 1 times [2020-10-14 23:32:29,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:29,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898820727] [2020-10-14 23:32:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:29,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:29,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:32:29,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:29,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 23:32:29,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:29,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:32:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:29,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:32:29,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:32:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:29,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:29,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 23:32:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:29,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:29,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:29,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:32:29,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:29,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:32:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:29,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:32:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:29,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:29,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:29,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:32:29,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:29,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:32:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:29,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898820727] [2020-10-14 23:32:29,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:32:29,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:32:29,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070521489] [2020-10-14 23:32:29,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:32:29,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:29,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:32:29,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:32:29,839 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-14 23:32:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:30,067 INFO L93 Difference]: Finished difference Result 90 states and 120 transitions. [2020-10-14 23:32:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:32:30,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 23:32:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:30,086 INFO L225 Difference]: With dead ends: 90 [2020-10-14 23:32:30,086 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 23:32:30,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:32:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 23:32:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-10-14 23:32:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 23:32:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-14 23:32:30,172 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-10-14 23:32:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:30,173 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-14 23:32:30,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:32:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-14 23:32:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:32:30,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:30,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:30,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:32:30,175 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:30,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:30,176 INFO L82 PathProgramCache]: Analyzing trace with hash -29727073, now seen corresponding path program 1 times [2020-10-14 23:32:30,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:30,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240948013] [2020-10-14 23:32:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:30,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:30,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:32:30,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:30,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 23:32:30,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:30,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:32:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:32:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:30,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:30,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:30,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:30,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:30,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:30,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:30,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:30,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:30,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:30,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:32:30,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:30,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:32:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:32:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 23:32:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:30,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:30,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:30,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:32:30,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:30,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 23:32:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:30,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240948013] [2020-10-14 23:32:30,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:32:30,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:32:30,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930641169] [2020-10-14 23:32:30,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:32:30,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:30,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:32:30,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:32:30,523 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-10-14 23:32:30,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:30,710 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-14 23:32:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:32:30,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-14 23:32:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:30,712 INFO L225 Difference]: With dead ends: 45 [2020-10-14 23:32:30,712 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 23:32:30,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:32:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 23:32:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-14 23:32:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:32:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 23:32:30,721 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2020-10-14 23:32:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:30,722 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 23:32:30,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:32:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 23:32:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:32:30,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:30,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:30,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:32:30,724 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1680455870, now seen corresponding path program 1 times [2020-10-14 23:32:30,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:30,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111464138] [2020-10-14 23:32:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:31,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:32:31,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-14 23:32:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:31,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:32:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:31,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:31,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:31,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:31,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:32:31,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:31,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:31,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:31,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:31,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:32:31,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:32:31,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:31,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:32:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:32:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:31,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:31,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:31,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:32:31,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:31,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 23:32:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:31,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:31,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111464138] [2020-10-14 23:32:31,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:31,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:32:31,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56610945] [2020-10-14 23:32:31,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:32:31,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:31,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:32:31,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:32:31,811 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-10-14 23:32:32,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:32,034 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-14 23:32:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:32:32,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-14 23:32:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:32,037 INFO L225 Difference]: With dead ends: 48 [2020-10-14 23:32:32,037 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 23:32:32,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:32:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 23:32:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-14 23:32:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:32:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-14 23:32:32,047 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 28 [2020-10-14 23:32:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:32,047 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-14 23:32:32,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:32:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-14 23:32:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:32:32,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:32,049 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:32,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:32:32,049 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1166508097, now seen corresponding path program 2 times [2020-10-14 23:32:32,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:32,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995481648] [2020-10-14 23:32:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:32,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:32,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:32:32,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:32,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 23:32:32,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:32,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:32:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:32:32,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:32,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:32,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:32,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:32,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:32,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:32,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:32,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:32,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 23:32:32,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:32,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:32,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:32,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:32,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:32:32,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:32,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:32:32,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:32,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:32:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:32:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:32:32,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995481648] [2020-10-14 23:32:32,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:32:32,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 23:32:32,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271135119] [2020-10-14 23:32:32,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:32:32,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:32,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:32:32,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:32:32,418 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-10-14 23:32:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:32,669 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-14 23:32:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:32:32,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-14 23:32:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:32,671 INFO L225 Difference]: With dead ends: 40 [2020-10-14 23:32:32,671 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 23:32:32,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:32:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 23:32:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-14 23:32:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:32:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-14 23:32:32,679 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 31 [2020-10-14 23:32:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:32,679 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-14 23:32:32,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:32:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-14 23:32:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:32:32,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:32,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:32,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:32:32,681 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:32,682 INFO L82 PathProgramCache]: Analyzing trace with hash 560900285, now seen corresponding path program 1 times [2020-10-14 23:32:32,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:32,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954178022] [2020-10-14 23:32:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:33,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:32:33,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 23:32:33,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:33,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:32:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:32:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:32:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:33,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:33,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:33,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:33,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:33,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:33,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:33,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:33,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:33,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:33,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 23:32:33,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:33,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:33,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:33,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 23:32:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:32:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:33,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:32:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:32:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:33,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954178022] [2020-10-14 23:32:33,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:33,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:32:33,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803170846] [2020-10-14 23:32:33,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:32:33,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:33,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:32:33,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:32:33,361 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 13 states. [2020-10-14 23:32:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:33,879 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-14 23:32:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:32:33,880 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-14 23:32:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:33,881 INFO L225 Difference]: With dead ends: 43 [2020-10-14 23:32:33,881 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 23:32:33,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:32:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 23:32:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-14 23:32:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 23:32:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-14 23:32:33,889 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 32 [2020-10-14 23:32:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:33,890 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-14 23:32:33,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:32:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-14 23:32:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:32:33,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:33,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:33,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:32:33,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:33,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1724014721, now seen corresponding path program 2 times [2020-10-14 23:32:33,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:33,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434225535] [2020-10-14 23:32:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:34,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:34,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:32:34,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 23:32:34,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:34,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:32:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:32:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:34,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:34,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:34,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 23:32:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:34,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:32:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:34,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:34,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:34,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:32:34,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:34,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:34,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:34,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:32:34,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434225535] [2020-10-14 23:32:34,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:34,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:32:34,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276187484] [2020-10-14 23:32:34,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:32:34,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:34,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:32:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:32:34,493 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 10 states. [2020-10-14 23:32:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:34,905 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-14 23:32:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:32:34,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-14 23:32:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:34,909 INFO L225 Difference]: With dead ends: 52 [2020-10-14 23:32:34,909 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:32:34,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:32:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:32:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 23:32:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:32:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-14 23:32:34,920 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2020-10-14 23:32:34,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:34,921 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-14 23:32:34,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:32:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-14 23:32:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:32:34,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:34,924 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:32:34,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:32:34,925 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:34,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:34,925 INFO L82 PathProgramCache]: Analyzing trace with hash 458064125, now seen corresponding path program 3 times [2020-10-14 23:32:34,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:34,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234753820] [2020-10-14 23:32:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:35,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:32:35,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-14 23:32:35,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:35,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:32:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:32:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:32:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:35,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:35,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:35,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:35,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:35,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:32:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:35,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:35,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:35,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:35,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 23:32:35,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:35,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:36,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:36,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:32:36,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 23:32:36,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:36,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:32:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:36,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234753820] [2020-10-14 23:32:36,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:36,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:32:36,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406197039] [2020-10-14 23:32:36,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:32:36,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:36,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:32:36,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:32:36,398 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 15 states. [2020-10-14 23:32:37,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:37,130 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2020-10-14 23:32:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:32:37,132 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-14 23:32:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:37,134 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:32:37,134 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:32:37,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:32:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:32:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-14 23:32:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:32:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2020-10-14 23:32:37,161 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 34 [2020-10-14 23:32:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:37,162 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2020-10-14 23:32:37,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:32:37,162 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2020-10-14 23:32:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:32:37,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:37,165 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:32:37,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:32:37,165 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:37,165 INFO L82 PathProgramCache]: Analyzing trace with hash -616968385, now seen corresponding path program 4 times [2020-10-14 23:32:37,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:37,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000679141] [2020-10-14 23:32:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:37,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:32:37,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-14 23:32:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:37,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:32:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:32:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:32:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:38,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:38,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 23:32:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:38,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:38,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:38,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:32:38,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:32:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:38,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:32:38,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:38,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000679141] [2020-10-14 23:32:38,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:38,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:32:38,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20654238] [2020-10-14 23:32:38,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:32:38,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:38,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:32:38,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:32:38,595 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 16 states. [2020-10-14 23:32:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:39,335 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-10-14 23:32:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:32:39,336 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2020-10-14 23:32:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:39,337 INFO L225 Difference]: With dead ends: 72 [2020-10-14 23:32:39,338 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:32:39,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:32:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:32:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2020-10-14 23:32:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:32:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-10-14 23:32:39,351 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 35 [2020-10-14 23:32:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:39,351 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-10-14 23:32:39,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:32:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-10-14 23:32:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:32:39,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:39,353 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-10-14 23:32:39,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:32:39,353 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:39,354 INFO L82 PathProgramCache]: Analyzing trace with hash 416762173, now seen corresponding path program 5 times [2020-10-14 23:32:39,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:39,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040752033] [2020-10-14 23:32:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:39,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:32:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-14 23:32:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:32:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:32:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:32:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:40,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:40,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:40,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 23:32:40,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:32:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:40,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:40,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:32:40,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:40,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:32:40,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:40,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:32:40,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040752033] [2020-10-14 23:32:40,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:40,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:32:40,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671418436] [2020-10-14 23:32:40,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:32:40,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:40,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:32:40,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:32:40,547 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 16 states. [2020-10-14 23:32:41,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:41,326 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-14 23:32:41,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:32:41,327 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-14 23:32:41,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:41,329 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:32:41,329 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:32:41,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:32:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:32:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-10-14 23:32:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:32:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-14 23:32:41,341 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 36 [2020-10-14 23:32:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:41,341 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-14 23:32:41,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:32:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-14 23:32:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:32:41,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:41,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:41,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:32:41,344 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:41,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2005342475, now seen corresponding path program 1 times [2020-10-14 23:32:41,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:41,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177830222] [2020-10-14 23:32:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:41,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:41,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:32:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 23:32:41,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:41,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:32:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:32:41,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:32:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:41,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:41,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:41,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:41,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:32:41,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:41,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:41,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:32:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:41,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:41,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:41,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:32:41,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:41,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:32:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:41,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:32:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:41,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:41,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:32:41,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:41,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:32:41,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177830222] [2020-10-14 23:32:41,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:41,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:32:41,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967538393] [2020-10-14 23:32:41,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:32:41,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:41,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:32:41,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:32:41,966 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 15 states. [2020-10-14 23:32:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:42,574 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2020-10-14 23:32:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:32:42,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-14 23:32:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:42,576 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:32:42,576 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:32:42,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:32:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:32:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-14 23:32:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:32:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-14 23:32:42,587 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 36 [2020-10-14 23:32:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:42,588 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-14 23:32:42,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:32:42,588 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-14 23:32:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:32:42,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:42,589 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:32:42,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:32:42,590 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:42,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1775282106, now seen corresponding path program 6 times [2020-10-14 23:32:42,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:42,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213659088] [2020-10-14 23:32:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:32:42,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 23:32:42,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:32:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:32:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:32:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:42,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:42,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:42,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:32:42,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:42,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:32:42,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:42,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:32:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:43,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:32:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:43,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:32:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:32:43,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:43,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:43,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:32:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:43,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213659088] [2020-10-14 23:32:43,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:43,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:32:43,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57341930] [2020-10-14 23:32:43,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:32:43,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:43,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:32:43,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:32:43,205 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 17 states. [2020-10-14 23:32:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:43,734 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-10-14 23:32:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:32:43,734 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-10-14 23:32:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:43,735 INFO L225 Difference]: With dead ends: 89 [2020-10-14 23:32:43,735 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:32:43,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:32:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:32:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-14 23:32:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:32:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-10-14 23:32:43,748 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 37 [2020-10-14 23:32:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:43,748 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-10-14 23:32:43,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:32:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-10-14 23:32:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:32:43,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:43,749 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:32:43,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:32:43,750 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1562083362, now seen corresponding path program 7 times [2020-10-14 23:32:43,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:43,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183503910] [2020-10-14 23:32:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:44,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:44,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:32:44,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:44,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-14 23:32:44,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:44,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:32:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:32:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:32:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:45,081 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2020-10-14 23:32:45,454 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2020-10-14 23:32:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:45,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:45,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:45,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:45,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:45,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:45,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:45,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:45,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:45,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:45,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:45,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:32:45,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 23:32:45,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:45,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:32:45,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:45,945 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-14 23:32:46,116 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-14 23:32:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:32:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:46,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:46,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:32:46,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:32:46,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:46,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:32:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:46,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183503910] [2020-10-14 23:32:46,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:46,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:32:46,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372697568] [2020-10-14 23:32:46,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:32:46,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:46,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:32:46,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:32:46,658 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 17 states. [2020-10-14 23:32:47,069 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-14 23:32:47,782 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 23:32:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:47,931 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2020-10-14 23:32:47,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:32:47,932 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-10-14 23:32:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:47,933 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:32:47,933 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 23:32:47,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:32:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 23:32:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2020-10-14 23:32:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 23:32:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-14 23:32:47,946 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 38 [2020-10-14 23:32:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:47,946 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-14 23:32:47,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:32:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-14 23:32:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:32:47,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:47,947 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-10-14 23:32:47,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:32:47,947 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:47,948 INFO L82 PathProgramCache]: Analyzing trace with hash -752110406, now seen corresponding path program 8 times [2020-10-14 23:32:47,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:47,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442960849] [2020-10-14 23:32:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:49,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:49,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:32:49,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-14 23:32:49,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:49,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:32:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:32:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:32:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:49,843 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 33 [2020-10-14 23:32:50,317 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 40 [2020-10-14 23:32:50,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:50,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:32:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:50,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:50,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:50,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:50,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:32:50,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 23:32:50,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:50,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:32:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:50,911 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-14 23:32:51,167 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-14 23:32:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:32:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:51,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:51,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:32:51,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:51,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 23:32:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:51,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:32:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:32:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:51,774 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-14 23:32:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:32:52,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442960849] [2020-10-14 23:32:52,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:52,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:32:52,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182732809] [2020-10-14 23:32:52,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:32:52,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:52,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:32:52,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:32:52,075 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 18 states. [2020-10-14 23:32:52,507 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-14 23:32:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:53,326 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2020-10-14 23:32:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:32:53,326 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-10-14 23:32:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:53,328 INFO L225 Difference]: With dead ends: 101 [2020-10-14 23:32:53,328 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:32:53,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:32:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:32:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2020-10-14 23:32:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:32:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2020-10-14 23:32:53,342 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 39 [2020-10-14 23:32:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:53,342 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2020-10-14 23:32:53,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:32:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2020-10-14 23:32:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:32:53,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:53,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:53,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:32:53,343 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1475160556, now seen corresponding path program 2 times [2020-10-14 23:32:53,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:53,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446568867] [2020-10-14 23:32:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:32:53,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 23:32:53,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:32:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:32:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:32:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:53,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:53,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:32:53,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:53,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:32:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:32:53,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 23:32:53,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:32:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:32:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:53,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:32:53,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:32:53,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:53,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:32:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:32:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:32:54,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446568867] [2020-10-14 23:32:54,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:54,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:32:54,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886304034] [2020-10-14 23:32:54,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:32:54,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:54,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:32:54,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:32:54,016 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand 15 states. [2020-10-14 23:32:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:54,715 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-10-14 23:32:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:32:54,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-14 23:32:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:54,717 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:32:54,718 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 23:32:54,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:32:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 23:32:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 52. [2020-10-14 23:32:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:32:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-14 23:32:54,732 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 39 [2020-10-14 23:32:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:54,733 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-14 23:32:54,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:32:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-14 23:32:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:32:54,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:54,734 INFO L422 BasicCegarLoop]: trace histogram [6, 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] [2020-10-14 23:32:54,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:32:54,735 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:54,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:54,735 INFO L82 PathProgramCache]: Analyzing trace with hash 522326818, now seen corresponding path program 9 times [2020-10-14 23:32:54,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:54,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574387794] [2020-10-14 23:32:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:56,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:32:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-10-14 23:32:56,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:56,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:32:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:32:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:32:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:56,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:56,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:56,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:56,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:32:56,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:56,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:56,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:56,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:56,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:32:56,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:56,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:32:56,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:56,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:32:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:32:56,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 23:32:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:57,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:57,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:32:57,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:57,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:32:57,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:57,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:32:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:32:57,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:32:57,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574387794] [2020-10-14 23:32:57,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:57,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:32:57,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669468612] [2020-10-14 23:32:57,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:32:57,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:57,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:32:57,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:32:57,147 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 19 states. [2020-10-14 23:32:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:57,898 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-10-14 23:32:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:32:57,899 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2020-10-14 23:32:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:57,900 INFO L225 Difference]: With dead ends: 61 [2020-10-14 23:32:57,901 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:32:57,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:32:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:32:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-10-14 23:32:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:32:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-14 23:32:57,912 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 40 [2020-10-14 23:32:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:57,913 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-14 23:32:57,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:32:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-14 23:32:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:32:57,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:57,914 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 23:32:57,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:32:57,914 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:57,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:57,915 INFO L82 PathProgramCache]: Analyzing trace with hash -100029475, now seen corresponding path program 10 times [2020-10-14 23:32:57,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:57,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695389939] [2020-10-14 23:32:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:59,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:32:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:32:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1583 [2020-10-14 23:32:59,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:59,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:32:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:32:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:32:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:59,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:59,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:32:59,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:59,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:59,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:32:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:59,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:32:59,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 23:32:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:59,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:32:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:32:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:33:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:00,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:00,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:33:00,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:33:00,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:00,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:33:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:33:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:33:00,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695389939] [2020-10-14 23:33:00,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:00,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:33:00,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331854432] [2020-10-14 23:33:00,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:33:00,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:00,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:33:00,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:33:00,382 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 17 states. [2020-10-14 23:33:00,827 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-14 23:33:01,036 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2020-10-14 23:33:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:01,410 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-14 23:33:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:33:01,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-10-14 23:33:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:01,416 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:33:01,417 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:33:01,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:33:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:33:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-14 23:33:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 23:33:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-14 23:33:01,424 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 40 [2020-10-14 23:33:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:01,425 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-14 23:33:01,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:33:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-14 23:33:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:33:01,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:01,425 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:33:01,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:33:01,426 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash -738000801, now seen corresponding path program 11 times [2020-10-14 23:33:01,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:01,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848245635] [2020-10-14 23:33:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:01,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:01,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:33:01,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:33:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 23:33:01,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:01,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:33:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:33:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:33:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:01,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:01,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:01,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:33:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:01,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:01,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:33:01,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 23:33:01,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:01,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:33:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:33:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:02,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:33:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:02,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:02,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:33:02,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:33:02,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:02,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:33:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:33:02,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:33:02,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848245635] [2020-10-14 23:33:02,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:02,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:33:02,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448056750] [2020-10-14 23:33:02,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:33:02,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:02,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:33:02,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:33:02,224 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 19 states. [2020-10-14 23:33:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:02,855 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-10-14 23:33:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:33:02,856 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-10-14 23:33:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:02,858 INFO L225 Difference]: With dead ends: 64 [2020-10-14 23:33:02,858 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:33:02,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:33:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:33:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-14 23:33:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:33:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-14 23:33:02,868 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 41 [2020-10-14 23:33:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:02,868 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-14 23:33:02,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:33:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-14 23:33:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:33:02,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:02,869 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-10-14 23:33:02,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:33:02,870 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:02,870 INFO L82 PathProgramCache]: Analyzing trace with hash 959724573, now seen corresponding path program 12 times [2020-10-14 23:33:02,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:02,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898106697] [2020-10-14 23:33:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:04,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:04,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:33:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:33:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1459 [2020-10-14 23:33:04,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:04,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:33:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:33:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:33:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:08,034 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 377 DAG size of output: 100 [2020-10-14 23:33:11,549 WARN L193 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 377 DAG size of output: 118 [2020-10-14 23:33:11,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:11,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:11,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:11,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:33:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:11,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:11,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:33:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 23:33:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:11,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:33:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:12,317 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 27 [2020-10-14 23:33:12,799 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 49 [2020-10-14 23:33:14,029 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 171 DAG size of output: 80 [2020-10-14 23:33:14,954 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 80 [2020-10-14 23:33:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:33:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:33:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 23:33:15,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:15,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:33:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:33:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:15,634 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2020-10-14 23:33:16,051 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2020-10-14 23:33:16,534 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2020-10-14 23:33:16,896 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2020-10-14 23:33:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:33:16,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898106697] [2020-10-14 23:33:16,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:16,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:33:16,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655953653] [2020-10-14 23:33:16,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:33:16,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:16,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:33:16,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:33:16,921 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 19 states. [2020-10-14 23:33:17,611 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 23:33:18,452 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-14 23:33:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:18,617 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-14 23:33:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:33:18,618 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-14 23:33:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:18,619 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:33:18,619 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:33:18,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:33:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:33:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-14 23:33:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:33:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-14 23:33:18,633 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 42 [2020-10-14 23:33:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:18,634 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-14 23:33:18,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:33:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-14 23:33:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:33:18,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:18,634 INFO L422 BasicCegarLoop]: trace histogram [6, 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] [2020-10-14 23:33:18,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:33:18,635 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:18,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2049603615, now seen corresponding path program 13 times [2020-10-14 23:33:18,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:18,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224184154] [2020-10-14 23:33:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:18,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:20,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:20,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:33:20,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:33:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-10-14 23:33:20,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:20,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:33:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:33:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:33:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:22,042 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 374 DAG size of output: 56 [2020-10-14 23:33:23,825 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 374 DAG size of output: 72 [2020-10-14 23:33:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:23,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:33:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:24,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:24,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:33:24,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 23:33:24,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:24,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:33:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:24,810 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-10-14 23:33:25,496 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 62 [2020-10-14 23:33:26,188 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2020-10-14 23:33:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:33:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:26,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:26,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:33:26,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:33:26,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:26,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:33:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:33:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:33:26,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:26,831 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-10-14 23:33:27,340 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2020-10-14 23:33:27,851 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2020-10-14 23:33:28,246 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-14 23:33:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:33:28,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224184154] [2020-10-14 23:33:28,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:33:28,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:33:28,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939523805] [2020-10-14 23:33:28,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:33:28,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:33:28,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:33:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:33:28,273 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 20 states. [2020-10-14 23:33:28,924 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 23:33:29,799 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 23:33:30,166 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2020-10-14 23:33:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:33:30,364 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-10-14 23:33:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:33:30,365 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2020-10-14 23:33:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:33:30,366 INFO L225 Difference]: With dead ends: 72 [2020-10-14 23:33:30,366 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:33:30,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:33:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:33:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2020-10-14 23:33:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 23:33:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-14 23:33:30,378 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 43 [2020-10-14 23:33:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:33:30,378 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-14 23:33:30,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:33:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-14 23:33:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:33:30,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:33:30,379 INFO L422 BasicCegarLoop]: trace histogram [7, 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] [2020-10-14 23:33:30,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:33:30,380 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:33:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:33:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1476115549, now seen corresponding path program 14 times [2020-10-14 23:33:30,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:33:30,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583868750] [2020-10-14 23:33:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:33:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:32,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:32,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:33:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:33:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2408 [2020-10-14 23:33:32,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:32,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:33:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:33:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:33:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:45,346 WARN L193 SmtUtils]: Spent 12.03 s on a formula simplification. DAG size of input: 656 DAG size of output: 88 [2020-10-14 23:33:57,986 WARN L193 SmtUtils]: Spent 12.45 s on a formula simplification. DAG size of input: 656 DAG size of output: 82 [2020-10-14 23:33:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:33:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:58,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:33:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:33:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:58,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:33:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:33:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:33:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:33:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:33:58,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:33:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:33:58,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:33:58,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:33:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 23:33:58,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:33:58,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:33:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:33:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:33:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:33:58,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:33:58,694 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-14 23:33:59,471 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 63 [2020-10-14 23:34:00,777 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 248 DAG size of output: 88 [2020-10-14 23:34:02,225 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 248 DAG size of output: 89 [2020-10-14 23:34:02,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:34:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:02,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:02,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:34:02,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 23:34:02,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:02,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:34:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:34:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:34:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:02,992 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-14 23:34:03,233 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-10-14 23:34:03,470 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-10-14 23:34:03,715 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-14 23:34:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:34:03,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583868750] [2020-10-14 23:34:03,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:03,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:34:03,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774460355] [2020-10-14 23:34:03,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:34:03,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:34:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:34:03,741 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 21 states. [2020-10-14 23:34:04,672 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 23:34:06,018 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-14 23:34:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:06,263 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-14 23:34:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:34:06,264 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-14 23:34:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:06,265 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:34:06,266 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 23:34:06,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:34:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 23:34:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-14 23:34:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:34:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-14 23:34:06,279 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 44 [2020-10-14 23:34:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:06,279 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-14 23:34:06,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:34:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-14 23:34:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:34:06,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:06,280 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-14 23:34:06,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:34:06,280 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:06,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:06,281 INFO L82 PathProgramCache]: Analyzing trace with hash -637060350, now seen corresponding path program 15 times [2020-10-14 23:34:06,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:06,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036140902] [2020-10-14 23:34:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:06,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:06,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:08,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:34:08,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:34:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2017 [2020-10-14 23:34:08,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:08,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:34:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:34:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:34:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:11,602 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 477 DAG size of output: 48 [2020-10-14 23:34:14,749 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 477 DAG size of output: 53 [2020-10-14 23:34:14,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:14,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:14,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:14,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:34:14,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:14,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:14,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:34:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:15,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:15,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:34:15,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:34:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 23:34:15,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:15,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:34:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:34:15,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:15,473 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-10-14 23:34:16,779 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 389 DAG size of output: 50 [2020-10-14 23:34:17,547 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 62 [2020-10-14 23:34:18,219 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 61 [2020-10-14 23:34:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:34:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:18,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:18,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:34:18,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:34:18,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:18,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:34:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:34:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:34:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:18,682 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-14 23:34:18,836 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-14 23:34:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:34:18,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036140902] [2020-10-14 23:34:18,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:18,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:34:18,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576470074] [2020-10-14 23:34:18,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:34:18,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:34:18,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:34:18,856 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 19 states. [2020-10-14 23:34:19,451 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2020-10-14 23:34:19,811 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 54 [2020-10-14 23:34:20,618 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 112 [2020-10-14 23:34:21,235 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-14 23:34:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:21,349 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-10-14 23:34:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:34:21,350 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2020-10-14 23:34:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:21,351 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:34:21,351 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:34:21,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:34:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:34:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-10-14 23:34:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:34:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-14 23:34:21,369 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 44 [2020-10-14 23:34:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:21,370 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-14 23:34:21,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:34:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-14 23:34:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:34:21,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:21,371 INFO L422 BasicCegarLoop]: trace histogram [8, 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] [2020-10-14 23:34:21,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:34:21,374 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:21,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:21,374 INFO L82 PathProgramCache]: Analyzing trace with hash 877854687, now seen corresponding path program 16 times [2020-10-14 23:34:21,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:21,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828775995] [2020-10-14 23:34:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:23,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:23,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:23,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:34:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:23,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:23,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:34:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:23,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:23,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:34:23,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 23:34:23,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:23,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:34:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:34:23,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:34:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:23,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:23,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:34:23,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:34:23,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:23,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:34:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:34:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:34:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:34:24,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828775995] [2020-10-14 23:34:24,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:24,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:34:24,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521436351] [2020-10-14 23:34:24,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:34:24,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:24,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:34:24,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:34:24,201 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 22 states. [2020-10-14 23:34:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:25,267 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-14 23:34:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:34:25,267 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-10-14 23:34:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:25,268 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:34:25,268 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:34:25,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:34:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:34:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-14 23:34:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:34:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-14 23:34:25,283 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 45 [2020-10-14 23:34:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:25,284 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-14 23:34:25,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:34:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-14 23:34:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:34:25,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:25,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:25,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:34:25,286 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:25,287 INFO L82 PathProgramCache]: Analyzing trace with hash -206088742, now seen corresponding path program 17 times [2020-10-14 23:34:25,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:25,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309384018] [2020-10-14 23:34:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:25,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:25,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:34:25,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:34:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-14 23:34:25,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:25,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:34:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:34:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:34:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:34:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:25,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:25,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:34:25,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:34:25,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:25,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:34:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:34:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:34:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:25,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:25,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:34:25,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 23:34:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:25,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:34:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:34:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:34:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:34:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:34:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:34:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:34:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:26,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:34:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:34:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:34:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:34:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:34:26,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309384018] [2020-10-14 23:34:26,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:34:26,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:34:26,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268413998] [2020-10-14 23:34:26,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:34:26,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:34:26,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:34:26,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:34:26,286 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 21 states. [2020-10-14 23:34:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:34:27,057 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-14 23:34:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:34:27,058 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 45 [2020-10-14 23:34:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:34:27,058 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:34:27,059 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:34:27,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:34:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:34:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-14 23:34:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:34:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-10-14 23:34:27,069 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 45 [2020-10-14 23:34:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:34:27,069 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-10-14 23:34:27,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:34:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-10-14 23:34:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:34:27,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:34:27,070 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:34:27,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:34:27,070 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:34:27,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:34:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash 269129218, now seen corresponding path program 18 times [2020-10-14 23:34:27,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:34:27,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770246142] [2020-10-14 23:34:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:34:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:34:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:34:29,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:34:29,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:34:29,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:34:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2168 [2020-10-14 23:34:29,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:34:29,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:34:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:34:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:34:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:34:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0