/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_of_sll_nondet_append-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:03:33,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:03:33,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:03:33,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:03:33,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:03:33,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:03:33,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:03:33,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:03:33,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:03:33,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:03:33,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:03:33,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:03:33,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:03:33,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:03:33,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:03:33,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:03:33,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:03:33,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:03:33,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:03:33,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:03:33,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:03:33,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:03:33,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:03:33,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:03:33,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:03:33,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:03:33,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:03:33,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:03:33,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:03:33,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:03:33,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:03:33,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:03:33,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:03:33,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:03:33,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:03:33,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:03:33,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:03:33,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:03:33,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:03:33,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:03:33,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:03:33,680 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 05:03:33,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:03:33,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:03:33,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:03:33,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:03:33,728 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:03:33,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:03:33,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:03:33,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:03:33,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:03:33,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:03:33,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:03:33,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:03:33,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:03:33,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:03:33,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:03:33,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:03:33,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:03:33,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:03:33,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:03:33,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:03:33,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:03:33,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:03:33,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:03:33,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:03:33,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:03:33,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:03:33,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:03:33,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:03:33,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:03:33,734 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:03:34,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:03:34,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:03:34,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:03:34,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:03:34,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:03:34,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2020-10-14 05:03:34,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/076219df4/fdf58533c5f14160b7489e32f3f9ed03/FLAG44325de1c [2020-10-14 05:03:34,660 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:03:34,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2020-10-14 05:03:34,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/076219df4/fdf58533c5f14160b7489e32f3f9ed03/FLAG44325de1c [2020-10-14 05:03:34,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/076219df4/fdf58533c5f14160b7489e32f3f9ed03 [2020-10-14 05:03:34,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:03:34,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:03:34,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:03:34,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:03:34,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:03:34,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:03:34" (1/1) ... [2020-10-14 05:03:35,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661e677f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:34, skipping insertion in model container [2020-10-14 05:03:35,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:03:34" (1/1) ... [2020-10-14 05:03:35,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:03:35,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:03:35,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:03:35,497 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:03:35,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:03:35,598 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:03:35,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35 WrapperNode [2020-10-14 05:03:35,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:03:35,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:03:35,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:03:35,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:03:35,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (1/1) ... [2020-10-14 05:03:35,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (1/1) ... [2020-10-14 05:03:35,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (1/1) ... [2020-10-14 05:03:35,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (1/1) ... [2020-10-14 05:03:35,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (1/1) ... [2020-10-14 05:03:35,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (1/1) ... [2020-10-14 05:03:35,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (1/1) ... [2020-10-14 05:03:35,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:03:35,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:03:35,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:03:35,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:03:35,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (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 05:03:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:03:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:03:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:03:35,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:03:35,745 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:03:35,745 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 05:03:35,745 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2020-10-14 05:03:35,746 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-14 05:03:35,746 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-14 05:03:35,747 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2020-10-14 05:03:35,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:03:35,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:03:35,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:03:35,747 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:03:35,747 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:03:35,748 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:03:35,748 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:03:35,748 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:03:35,748 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:03:35,748 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:03:35,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:03:35,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:03:35,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:03:35,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:03:35,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:03:35,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:03:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:03:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:03:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:03:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:03:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:03:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:03:35,750 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:03:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:03:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:03:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:03:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:03:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:03:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:03:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:03:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:03:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:03:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:03:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:03:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:03:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:03:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:03:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:03:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:03:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:03:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:03:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:03:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:03:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:03:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:03:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:03:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:03:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:03:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:03:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:03:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:03:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:03:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:03:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:03:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:03:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:03:35,760 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:03:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:03:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:03:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:03:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:03:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:03:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:03:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:03:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:03:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:03:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:03:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:03:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:03:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:03:35,762 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:03:35,763 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:03:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:03:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:03:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:03:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:03:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:03:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:03:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:03:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:03:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:03:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:03:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:03:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:03:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:03:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:03:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:03:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:03:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:03:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:03:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:03:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:03:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:03:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:03:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:03:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 05:03:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:03:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:03:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2020-10-14 05:03:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-14 05:03:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:03:35,770 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-14 05:03:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2020-10-14 05:03:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:03:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:03:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:03:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:03:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:03:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:03:36,149 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:03:36,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:03:36,441 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-14 05:03:36,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:03:36 BoogieIcfgContainer [2020-10-14 05:03:36,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:03:36,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:03:36,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:03:36,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:03:36,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:03:34" (1/3) ... [2020-10-14 05:03:36,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b220424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:03:36, skipping insertion in model container [2020-10-14 05:03:36,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:03:35" (2/3) ... [2020-10-14 05:03:36,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b220424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:03:36, skipping insertion in model container [2020-10-14 05:03:36,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:03:36" (3/3) ... [2020-10-14 05:03:36,453 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-2.i [2020-10-14 05:03:36,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:03:36,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:03:36,483 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:03:36,505 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:03:36,505 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:03:36,505 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:03:36,506 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:03:36,506 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:03:36,506 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:03:36,506 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:03:36,507 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:03:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-14 05:03:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:03:36,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:36,538 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, 1] [2020-10-14 05:03:36,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:36,546 INFO L82 PathProgramCache]: Analyzing trace with hash 655141366, now seen corresponding path program 1 times [2020-10-14 05:03:36,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:36,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756192481] [2020-10-14 05:03:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:36,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:37,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:03:37,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:37,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-14 05:03:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:37,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 05:03:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:03:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:37,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:03:37,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:37,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 05:03:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:37,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:03:37,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:03:37,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:37,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:03:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:37,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:37,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:37,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:03:37,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:37,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:37,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:03:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:37,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:37,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:37,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:03:37,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:37,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:03:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:37,322 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 05:03:37,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756192481] [2020-10-14 05:03:37,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:03:37,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:03:37,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203109530] [2020-10-14 05:03:37,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:03:37,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:37,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:03:37,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:03:37,351 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2020-10-14 05:03:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:37,620 INFO L93 Difference]: Finished difference Result 143 states and 207 transitions. [2020-10-14 05:03:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:03:37,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 05:03:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:37,633 INFO L225 Difference]: With dead ends: 143 [2020-10-14 05:03:37,633 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 05:03:37,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 05:03:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 05:03:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-10-14 05:03:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:03:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2020-10-14 05:03:37,689 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 29 [2020-10-14 05:03:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:37,689 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-14 05:03:37,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:03:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2020-10-14 05:03:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:03:37,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:37,692 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, 1] [2020-10-14 05:03:37,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:03:37,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:37,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1740250704, now seen corresponding path program 1 times [2020-10-14 05:03:37,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:37,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091683399] [2020-10-14 05:03:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:03:38,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:38,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-14 05:03:38,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:03:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:03:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:38,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:38,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:38,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 05:03:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:03:38,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:03:38,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:03:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:38,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:38,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:38,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:03:38,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:38,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:38,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:38,356 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 05:03:38,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091683399] [2020-10-14 05:03:38,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:03:38,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:03:38,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732598208] [2020-10-14 05:03:38,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:03:38,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:38,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:03:38,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:03:38,361 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 5 states. [2020-10-14 05:03:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:38,555 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2020-10-14 05:03:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:03:38,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-14 05:03:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:38,558 INFO L225 Difference]: With dead ends: 104 [2020-10-14 05:03:38,558 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 05:03:38,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:03:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 05:03:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2020-10-14 05:03:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:03:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-14 05:03:38,572 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 29 [2020-10-14 05:03:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:38,572 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-14 05:03:38,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:03:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-14 05:03:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 05:03:38,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:38,574 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, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:38,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:03:38,575 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:38,575 INFO L82 PathProgramCache]: Analyzing trace with hash 470407865, now seen corresponding path program 1 times [2020-10-14 05:03:38,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:38,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000833117] [2020-10-14 05:03:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:39,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 05:03:39,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-14 05:03:39,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:39,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:39,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:03:39,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:03:39,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:03:39,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:39,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:03:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:03:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:03:39,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:39,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:03:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:39,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:39,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:39,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:03:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:39,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:39,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:39,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:39,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:03:39,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:39,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:03:39,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000833117] [2020-10-14 05:03:39,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:03:39,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:03:39,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142839223] [2020-10-14 05:03:39,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:03:39,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:39,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:03:39,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:03:39,247 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 6 states. [2020-10-14 05:03:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:39,484 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-14 05:03:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:03:39,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-14 05:03:39,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:39,487 INFO L225 Difference]: With dead ends: 77 [2020-10-14 05:03:39,487 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 05:03:39,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:03:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 05:03:39,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-10-14 05:03:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 05:03:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-14 05:03:39,499 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 34 [2020-10-14 05:03:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:39,499 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-14 05:03:39,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:03:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-14 05:03:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 05:03:39,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:39,501 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:39,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:03:39,502 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:39,502 INFO L82 PathProgramCache]: Analyzing trace with hash -71488324, now seen corresponding path program 1 times [2020-10-14 05:03:39,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:39,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62917162] [2020-10-14 05:03:39,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:03:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 05:03:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2964 [2020-10-14 05:03:42,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 05:03:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:03:42,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:42,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:42,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:03:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:42,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:42,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:03:42,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:42,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:42,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:03:42,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62917162] [2020-10-14 05:03:42,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:03:42,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:03:42,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012163640] [2020-10-14 05:03:42,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:03:42,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:03:42,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:03:42,578 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 5 states. [2020-10-14 05:03:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:42,722 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2020-10-14 05:03:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:03:42,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-14 05:03:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:42,724 INFO L225 Difference]: With dead ends: 78 [2020-10-14 05:03:42,724 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:03:42,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:03:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:03:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-14 05:03:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 05:03:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-14 05:03:42,733 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 38 [2020-10-14 05:03:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:42,734 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-14 05:03:42,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:03:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-14 05:03:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:03:42,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:42,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:42,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:03:42,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:42,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1638639122, now seen corresponding path program 1 times [2020-10-14 05:03:42,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:42,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790854665] [2020-10-14 05:03:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:43,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:43,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:03:43,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-14 05:03:43,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:43,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:03:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:03:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:03:43,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:43,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:43,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:43,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:43,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:43,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:43,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:43,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:43,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:03:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:43,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:43,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:03:43,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:03:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:43,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:03:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:43,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:43,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:43,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:03:43,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:43,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:43,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:43,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:43,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:43,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:43,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 05:03:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:43,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:43,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:03:43,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:43,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:03:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:43,254 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 05:03:43,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790854665] [2020-10-14 05:03:43,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:43,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:03:43,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608638693] [2020-10-14 05:03:43,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:03:43,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:43,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:03:43,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:03:43,258 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 6 states. [2020-10-14 05:03:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:43,454 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2020-10-14 05:03:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:03:43,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-14 05:03:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:43,455 INFO L225 Difference]: With dead ends: 116 [2020-10-14 05:03:43,456 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 05:03:43,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:03:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 05:03:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2020-10-14 05:03:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 05:03:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2020-10-14 05:03:43,465 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 45 [2020-10-14 05:03:43,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:43,466 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2020-10-14 05:03:43,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:03:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2020-10-14 05:03:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:03:43,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:43,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:43,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:03:43,468 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:43,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1453841321, now seen corresponding path program 2 times [2020-10-14 05:03:43,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:43,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56876282] [2020-10-14 05:03:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:03:44,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:44,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-14 05:03:44,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:03:44,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:03:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:03:44,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:44,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:44,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:44,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:03:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:03:44,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:03:44,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 05:03:44,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:44,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:44,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:03:44,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:44,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:44,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 05:03:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:44,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:03:44,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:03:44,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56876282] [2020-10-14 05:03:44,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:44,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:03:44,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161497487] [2020-10-14 05:03:44,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:03:44,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:44,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:03:44,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:03:44,145 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand 7 states. [2020-10-14 05:03:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:44,344 INFO L93 Difference]: Finished difference Result 121 states and 147 transitions. [2020-10-14 05:03:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:03:44,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 05:03:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:44,346 INFO L225 Difference]: With dead ends: 121 [2020-10-14 05:03:44,346 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 05:03:44,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:03:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 05:03:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-10-14 05:03:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 05:03:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2020-10-14 05:03:44,356 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 50 [2020-10-14 05:03:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:44,356 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2020-10-14 05:03:44,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:03:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2020-10-14 05:03:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:03:44,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:44,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:44,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:03:44,359 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:44,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1850700686, now seen corresponding path program 3 times [2020-10-14 05:03:44,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:44,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483416633] [2020-10-14 05:03:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:03:44,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 05:03:44,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:03:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:03:44,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:03:44,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:44,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:44,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:44,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:03:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:03:44,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 05:03:44,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:03:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:03:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:44,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:03:44,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:44,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:03:44,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:44,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:03:44,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:03:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:03:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:03:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:44,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:44,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:44,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:44,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:44,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:44,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:03:44,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:44,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 05:03:44,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483416633] [2020-10-14 05:03:44,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:03:44,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 05:03:44,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708547789] [2020-10-14 05:03:44,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:03:44,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:44,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:03:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:03:44,814 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand 11 states. [2020-10-14 05:03:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:45,143 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-10-14 05:03:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:03:45,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-14 05:03:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:45,145 INFO L225 Difference]: With dead ends: 107 [2020-10-14 05:03:45,145 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 05:03:45,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:03:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 05:03:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-14 05:03:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 05:03:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-10-14 05:03:45,155 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 55 [2020-10-14 05:03:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:45,156 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-10-14 05:03:45,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:03:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-10-14 05:03:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:03:45,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:45,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:45,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:03:45,158 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1112701260, now seen corresponding path program 1 times [2020-10-14 05:03:45,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:45,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230309848] [2020-10-14 05:03:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:50,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:50,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:03:50,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:03:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 05:03:50,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:50,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:03:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:03:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:03:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:50,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:50,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:50,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:50,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:50,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:50,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:50,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:03:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:50,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:50,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:03:50,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 05:03:50,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:50,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:03:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:03:50,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:50,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:50,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:50,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:03:50,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 05:03:50,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:50,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:03:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:03:50,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:50,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:50,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:03:50,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:03:50,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:50,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:50,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:03:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:50,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 05:03:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:50,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:50,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:50,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:50,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:50,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:50,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:03:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 05:03:50,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230309848] [2020-10-14 05:03:50,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:50,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:03:50,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245795889] [2020-10-14 05:03:50,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:03:50,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:50,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:03:50,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:03:50,522 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 12 states. [2020-10-14 05:03:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:50,895 INFO L93 Difference]: Finished difference Result 123 states and 155 transitions. [2020-10-14 05:03:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:03:50,896 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-14 05:03:50,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:50,898 INFO L225 Difference]: With dead ends: 123 [2020-10-14 05:03:50,898 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 05:03:50,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:03:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 05:03:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88. [2020-10-14 05:03:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 05:03:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2020-10-14 05:03:50,924 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 58 [2020-10-14 05:03:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:50,925 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2020-10-14 05:03:50,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:03:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2020-10-14 05:03:50,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 05:03:50,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:50,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:50,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:03:50,930 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:50,930 INFO L82 PathProgramCache]: Analyzing trace with hash -767305266, now seen corresponding path program 2 times [2020-10-14 05:03:50,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:50,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899652014] [2020-10-14 05:03:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:55,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:55,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 05:03:55,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:03:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 05:03:55,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:55,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:03:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:03:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 05:03:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:56,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:56,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:56,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:56,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:56,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:56,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:56,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:03:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:56,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:56,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:03:56,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 05:03:56,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:56,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:03:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:03:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:03:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:56,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:03:56,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 05:03:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:56,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:03:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:03:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:03:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:56,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:03:56,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:03:56,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:56,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:56,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:03:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 05:03:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:56,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:56,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:56,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:03:56,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:56,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:03:56,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:56,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:03:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:56,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 05:03:56,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899652014] [2020-10-14 05:03:56,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:56,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:03:56,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77799200] [2020-10-14 05:03:56,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:03:56,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:56,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:03:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:03:56,456 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand 13 states. [2020-10-14 05:03:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:56,856 INFO L93 Difference]: Finished difference Result 129 states and 162 transitions. [2020-10-14 05:03:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:03:56,859 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-14 05:03:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:56,861 INFO L225 Difference]: With dead ends: 129 [2020-10-14 05:03:56,861 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 05:03:56,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:03:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 05:03:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 91. [2020-10-14 05:03:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 05:03:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2020-10-14 05:03:56,882 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 61 [2020-10-14 05:03:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:56,884 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2020-10-14 05:03:56,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:03:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2020-10-14 05:03:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:03:56,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:56,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:56,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:03:56,887 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1816889228, now seen corresponding path program 3 times [2020-10-14 05:03:56,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:56,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449164314] [2020-10-14 05:03:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:00,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:00,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 05:04:00,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:04:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3700 [2020-10-14 05:04:00,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:00,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:04:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 05:04:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:04:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:00,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:00,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:00,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:00,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:04:00,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:00,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:04:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:00,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:04:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 05:04:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:01,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:04:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:04:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:01,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:01,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:04:01,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:01,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 05:04:01,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:01,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:04:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:04:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:04:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:01,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:01,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:04:01,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:04:01,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:01,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:04:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:04:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 05:04:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:01,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:01,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:04:01,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:04:01,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:01,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:04:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:04:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 05:04:01,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449164314] [2020-10-14 05:04:01,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:04:01,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 05:04:01,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502677110] [2020-10-14 05:04:01,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:04:01,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:01,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:04:01,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:04:01,760 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand 18 states. [2020-10-14 05:04:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:03,026 INFO L93 Difference]: Finished difference Result 182 states and 252 transitions. [2020-10-14 05:04:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:04:03,026 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 64 [2020-10-14 05:04:03,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:03,029 INFO L225 Difference]: With dead ends: 182 [2020-10-14 05:04:03,029 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 05:04:03,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:04:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 05:04:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 110. [2020-10-14 05:04:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 05:04:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2020-10-14 05:04:03,069 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 64 [2020-10-14 05:04:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:03,069 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2020-10-14 05:04:03,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:04:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2020-10-14 05:04:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 05:04:03,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:03,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:03,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:04:03,073 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:03,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:03,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2139714032, now seen corresponding path program 1 times [2020-10-14 05:04:03,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:03,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023655747] [2020-10-14 05:04:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:04,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:04,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:04:04,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-10-14 05:04:04,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:04,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:04:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:04:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 05:04:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:04,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:04,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:04,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:04,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:04:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:04,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 05:04:04,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-14 05:04:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:04,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:04:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:04:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:04:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:09,749 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-10-14 05:04:12,293 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 119 DAG size of output: 102 [2020-10-14 05:04:20,622 WARN L193 SmtUtils]: Spent 7.94 s on a formula simplification. DAG size of input: 170 DAG size of output: 158 [2020-10-14 05:04:20,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:23,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:23,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:04:23,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2080 [2020-10-14 05:04:23,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:23,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:04:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:04:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:04:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1