/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:46:24,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:46:24,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:46:24,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:46:24,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:46:24,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:46:24,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:46:24,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:46:24,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:46:24,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:46:24,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:46:24,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:46:24,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:46:24,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:46:24,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:46:24,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:46:24,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:46:24,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:46:24,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:46:24,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:46:24,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:46:24,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:46:24,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:46:24,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:46:24,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:46:24,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:46:24,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:46:24,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:46:24,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:46:24,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:46:24,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:46:24,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:46:24,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:46:24,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:46:24,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:46:24,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:46:24,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:46:24,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:46:24,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:46:24,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:46:24,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:46:24,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:46:24,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:46:24,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:46:24,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:46:24,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:46:24,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:46:24,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:46:24,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:46:24,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:46:24,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:46:24,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:46:24,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:46:24,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:46:24,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:46:24,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:46:24,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:46:24,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:46:24,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:46:24,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:46:24,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:46:24,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:46:24,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:46:24,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:46:24,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:46:24,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:46:24,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:46:24,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:46:24,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:46:24,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:46:24,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:46:24,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:46:25,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:46:25,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:46:25,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:46:25,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:46:25,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:46:25,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i [2020-10-12 15:46:25,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5f69b9f1/87486988fc9a4d6eb64ce32f02a9f075/FLAG73113d0ac [2020-10-12 15:46:25,824 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:46:25,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i [2020-10-12 15:46:25,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5f69b9f1/87486988fc9a4d6eb64ce32f02a9f075/FLAG73113d0ac [2020-10-12 15:46:26,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5f69b9f1/87486988fc9a4d6eb64ce32f02a9f075 [2020-10-12 15:46:26,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:46:26,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:46:26,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:46:26,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:46:26,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:46:26,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50be01d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26, skipping insertion in model container [2020-10-12 15:46:26,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:46:26,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:46:26,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:46:26,637 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:46:26,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:46:26,749 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:46:26,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26 WrapperNode [2020-10-12 15:46:26,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:46:26,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:46:26,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:46:26,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:46:26,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... [2020-10-12 15:46:26,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:46:26,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:46:26,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:46:26,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:46:26,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:46:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:46:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:46:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:46:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:46:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:46:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-12 15:46:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-12 15:46:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-12 15:46:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:46:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:46:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:46:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:46:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:46:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:46:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:46:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:46:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:46:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:46:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:46:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:46:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:46:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:46:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:46:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:46:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:46:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:46:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:46:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:46:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:46:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:46:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:46:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:46:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:46:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:46:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:46:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:46:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:46:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:46:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:46:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:46:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:46:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:46:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:46:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:46:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:46:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:46:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:46:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:46:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:46:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:46:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:46:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:46:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:46:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:46:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:46:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:46:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:46:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:46:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:46:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:46:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:46:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:46:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:46:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:46:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:46:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:46:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:46:26,917 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:46:26,917 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:46:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:46:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:46:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:46:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:46:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:46:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:46:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:46:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:46:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:46:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:46:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:46:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:46:26,922 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:46:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:46:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:46:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:46:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:46:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:46:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:46:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:46:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:46:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:46:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:46:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:46:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:46:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:46:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:46:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:46:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:46:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:46:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:46:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:46:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:46:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:46:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:46:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:46:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:46:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:46:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:46:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:46:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:46:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:46:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:46:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:46:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:46:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:46:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:46:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:46:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-12 15:46:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:46:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:46:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-12 15:46:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:46:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-12 15:46:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:46:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:46:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:46:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:46:27,228 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:46:27,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:46:27,403 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 15:46:27,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:46:27 BoogieIcfgContainer [2020-10-12 15:46:27,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:46:27,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:46:27,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:46:27,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:46:27,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:46:26" (1/3) ... [2020-10-12 15:46:27,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76039d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:46:27, skipping insertion in model container [2020-10-12 15:46:27,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:26" (2/3) ... [2020-10-12 15:46:27,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76039d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:46:27, skipping insertion in model container [2020-10-12 15:46:27,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:46:27" (3/3) ... [2020-10-12 15:46:27,416 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-2.i [2020-10-12 15:46:27,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:46:27,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:46:27,449 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:46:27,471 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:46:27,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:46:27,471 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:46:27,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:46:27,472 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:46:27,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:46:27,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:46:27,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:46:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-12 15:46:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:46:27,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:27,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:27,499 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1666427650, now seen corresponding path program 1 times [2020-10-12 15:46:27,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:27,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12928487] [2020-10-12 15:46:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:27,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:27,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:27,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:46:27,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 15:46:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:46:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:46:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:27,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:27,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:27,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:46:27,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:27,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 15:46:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:27,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:27,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:27,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:46:27,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:46:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:46:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:27,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:27,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:27,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:46:27,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:27,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:46:27,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:27,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12928487] [2020-10-12 15:46:27,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:46:27,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:46:27,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56376985] [2020-10-12 15:46:27,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:46:28,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:28,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:46:28,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:46:28,020 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-12 15:46:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:28,186 INFO L93 Difference]: Finished difference Result 90 states and 120 transitions. [2020-10-12 15:46:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:46:28,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-12 15:46:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:28,198 INFO L225 Difference]: With dead ends: 90 [2020-10-12 15:46:28,198 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 15:46:28,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:46:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 15:46:28,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-10-12 15:46:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 15:46:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-12 15:46:28,250 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-10-12 15:46:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:28,251 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-12 15:46:28,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:46:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-12 15:46:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:46:28,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:28,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:28,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:46:28,253 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash -29727073, now seen corresponding path program 1 times [2020-10-12 15:46:28,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:28,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426739364] [2020-10-12 15:46:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:46:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 15:46:28,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:46:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:46:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:28,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:28,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:46:28,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:28,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:28,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:28,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:46:28,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:46:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:46:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:28,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 15:46:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:28,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:28,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:46:28,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 15:46:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:28,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:28,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426739364] [2020-10-12 15:46:28,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:46:28,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:46:28,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652025142] [2020-10-12 15:46:28,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:46:28,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:28,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:46:28,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:46:28,580 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-10-12 15:46:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:28,762 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-12 15:46:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:46:28,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-12 15:46:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:28,764 INFO L225 Difference]: With dead ends: 45 [2020-10-12 15:46:28,764 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 15:46:28,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:46:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 15:46:28,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-12 15:46:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 15:46:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-12 15:46:28,773 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2020-10-12 15:46:28,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:28,773 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-12 15:46:28,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:46:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-12 15:46:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:46:28,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:28,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:28,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:46:28,775 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:28,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1680455870, now seen corresponding path program 1 times [2020-10-12 15:46:28,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:28,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356535058] [2020-10-12 15:46:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:28,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:29,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:29,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:46:29,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-12 15:46:29,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:46:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:46:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:46:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:29,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:46:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:29,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:29,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:29,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:46:29,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:46:29,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:29,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:29,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:29,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:46:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:29,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:29,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:29,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:46:29,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:46:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:46:29,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:29,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356535058] [2020-10-12 15:46:29,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:46:29,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 15:46:29,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103236031] [2020-10-12 15:46:29,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:46:29,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:29,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:46:29,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:46:29,874 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-10-12 15:46:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:30,173 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-12 15:46:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:46:30,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-12 15:46:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:30,176 INFO L225 Difference]: With dead ends: 39 [2020-10-12 15:46:30,176 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 15:46:30,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:46:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 15:46:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-12 15:46:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 15:46:30,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-12 15:46:30,190 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 28 [2020-10-12 15:46:30,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:30,190 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-12 15:46:30,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:46:30,191 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-12 15:46:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:46:30,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:30,194 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] [2020-10-12 15:46:30,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:46:30,195 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:30,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1808388506, now seen corresponding path program 1 times [2020-10-12 15:46:30,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:30,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835127630] [2020-10-12 15:46:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:30,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:30,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:30,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:46:30,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 15:46:30,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:46:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:46:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:46:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:30,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:30,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:30,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:30,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:30,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:30,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:30,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:30,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:46:30,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:46:30,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:46:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:30,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:46:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:30,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:30,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 15:46:30,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:30,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:46:30,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:46:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:30,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835127630] [2020-10-12 15:46:30,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:30,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:46:30,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299721070] [2020-10-12 15:46:30,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:46:30,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:30,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:46:30,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:46:30,690 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 13 states. [2020-10-12 15:46:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:30,983 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-10-12 15:46:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:46:30,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-10-12 15:46:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:30,987 INFO L225 Difference]: With dead ends: 50 [2020-10-12 15:46:30,987 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 15:46:30,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:46:30,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 15:46:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-12 15:46:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 15:46:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-12 15:46:30,998 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 29 [2020-10-12 15:46:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:30,998 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-12 15:46:30,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:46:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-12 15:46:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:46:31,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:31,001 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] [2020-10-12 15:46:31,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:46:31,001 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:31,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1706585534, now seen corresponding path program 2 times [2020-10-12 15:46:31,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:31,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350606959] [2020-10-12 15:46:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:31,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:31,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:31,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:46:31,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-12 15:46:31,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:46:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:46:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:46:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:31,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:31,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:31,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:31,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:46:31,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:46:31,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:31,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:31,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:46:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:31,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:31,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:31,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:31,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:46:31,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:31,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350606959] [2020-10-12 15:46:31,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:31,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:46:31,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019858873] [2020-10-12 15:46:31,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:46:31,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:31,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:46:31,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:46:31,835 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 12 states. [2020-10-12 15:46:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:32,145 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-12 15:46:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:46:32,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-12 15:46:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:32,147 INFO L225 Difference]: With dead ends: 48 [2020-10-12 15:46:32,147 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 15:46:32,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:46:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 15:46:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-12 15:46:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 15:46:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-12 15:46:32,154 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 30 [2020-10-12 15:46:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:32,155 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-12 15:46:32,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:46:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-12 15:46:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:46:32,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:32,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:32,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:46:32,156 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash 560900285, now seen corresponding path program 3 times [2020-10-12 15:46:32,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:32,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603898211] [2020-10-12 15:46:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:32,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:46:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-12 15:46:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:46:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:46:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:46:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:32,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:32,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:32,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:32,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:32,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:32,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:32,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:46:32,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:32,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 15:46:32,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:32,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:46:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:46:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 15:46:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:46:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:46:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:32,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603898211] [2020-10-12 15:46:32,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:32,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:46:32,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292796721] [2020-10-12 15:46:32,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:46:32,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:32,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:46:32,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:46:32,703 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 13 states. [2020-10-12 15:46:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:33,040 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-12 15:46:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:46:33,041 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-12 15:46:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:33,042 INFO L225 Difference]: With dead ends: 43 [2020-10-12 15:46:33,042 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 15:46:33,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:46:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 15:46:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-12 15:46:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 15:46:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-12 15:46:33,050 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 32 [2020-10-12 15:46:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:33,051 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-12 15:46:33,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:46:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-12 15:46:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:46:33,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:33,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:33,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:46:33,052 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:33,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1724014721, now seen corresponding path program 4 times [2020-10-12 15:46:33,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:33,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247101805] [2020-10-12 15:46:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:46:33,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 15:46:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:46:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:46:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:46:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:33,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:33,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:33,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:46:33,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 15:46:33,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:46:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:46:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:46:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:33,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:33,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:46:33,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:46:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:33,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:33,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247101805] [2020-10-12 15:46:33,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:33,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:46:33,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267945666] [2020-10-12 15:46:33,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:46:33,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:33,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:46:33,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:46:33,708 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 15 states. [2020-10-12 15:46:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:34,224 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-10-12 15:46:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:46:34,224 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2020-10-12 15:46:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:34,226 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:46:34,226 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 15:46:34,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:46:34,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 15:46:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-12 15:46:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 15:46:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-12 15:46:34,242 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 33 [2020-10-12 15:46:34,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:34,242 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-12 15:46:34,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:46:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-12 15:46:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:46:34,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:34,243 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:34,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:46:34,244 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:34,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:34,244 INFO L82 PathProgramCache]: Analyzing trace with hash 458064125, now seen corresponding path program 5 times [2020-10-12 15:46:34,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:34,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195629369] [2020-10-12 15:46:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:34,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:34,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:46:34,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-12 15:46:34,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:46:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:46:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:46:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:34,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:34,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:34,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:34,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:34,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:46:34,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 15:46:34,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:46:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:34,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:46:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:34,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:46:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:34,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:35,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:35,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:46:35,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:35,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:46:35,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:35,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:35,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:46:35,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:35,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195629369] [2020-10-12 15:46:35,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:35,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:46:35,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276904962] [2020-10-12 15:46:35,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:46:35,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:35,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:46:35,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:46:35,114 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 16 states. [2020-10-12 15:46:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:35,666 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-10-12 15:46:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:46:35,667 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-10-12 15:46:35,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:35,668 INFO L225 Difference]: With dead ends: 74 [2020-10-12 15:46:35,668 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 15:46:35,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:46:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 15:46:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-10-12 15:46:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 15:46:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-12 15:46:35,688 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 34 [2020-10-12 15:46:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:35,690 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-12 15:46:35,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:46:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-12 15:46:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:46:35,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:35,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:35,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:46:35,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:35,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1775282106, now seen corresponding path program 6 times [2020-10-12 15:46:35,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:35,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852221043] [2020-10-12 15:46:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:35,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:35,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:46:35,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-12 15:46:35,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:35,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:46:35,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:46:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:46:35,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:35,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:35,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:35,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:35,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:35,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:36,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:36,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:46:36,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 15:46:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:46:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:46:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 15:46:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:36,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:36,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:46:36,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:46:36,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:46:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:36,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:46:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:36,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852221043] [2020-10-12 15:46:36,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:36,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:46:36,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810155004] [2020-10-12 15:46:36,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:46:36,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:36,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:46:36,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:46:36,298 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 17 states. [2020-10-12 15:46:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:36,796 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-10-12 15:46:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:46:36,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-10-12 15:46:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:36,798 INFO L225 Difference]: With dead ends: 89 [2020-10-12 15:46:36,798 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 15:46:36,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:46:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 15:46:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-12 15:46:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 15:46:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2020-10-12 15:46:36,828 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 37 [2020-10-12 15:46:36,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:36,829 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2020-10-12 15:46:36,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:46:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2020-10-12 15:46:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:46:36,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:36,834 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:36,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:46:36,835 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:36,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1562083362, now seen corresponding path program 7 times [2020-10-12 15:46:36,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:36,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104502590] [2020-10-12 15:46:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 15:46:37,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-12 15:46:37,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:46:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:46:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:46:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:37,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:37,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:37,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:38,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:38,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:46:38,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 15:46:38,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:38,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:46:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:38,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:46:38,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 15:46:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:38,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 15:46:38,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 15:46:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:46:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:46:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:38,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104502590] [2020-10-12 15:46:38,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:38,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:46:38,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51435955] [2020-10-12 15:46:38,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:46:38,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:38,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:46:38,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:46:38,427 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand 19 states. [2020-10-12 15:46:39,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:39,258 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2020-10-12 15:46:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:46:39,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2020-10-12 15:46:39,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:39,260 INFO L225 Difference]: With dead ends: 93 [2020-10-12 15:46:39,260 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 15:46:39,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:46:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 15:46:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-10-12 15:46:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 15:46:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-12 15:46:39,272 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 38 [2020-10-12 15:46:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:39,272 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-12 15:46:39,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:46:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-12 15:46:39,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:46:39,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:39,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:39,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:46:39,274 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1475160556, now seen corresponding path program 1 times [2020-10-12 15:46:39,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:39,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433499460] [2020-10-12 15:46:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:39,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:39,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:39,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:46:39,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-12 15:46:39,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:46:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:46:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:46:39,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:39,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:39,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 15:46:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:39,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:39,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:46:39,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 15:46:39,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:46:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:46:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:46:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:39,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:39,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:39,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:46:39,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:46:40,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433499460] [2020-10-12 15:46:40,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:40,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:46:40,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563815302] [2020-10-12 15:46:40,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:46:40,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:40,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:46:40,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:46:40,016 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 15 states. [2020-10-12 15:46:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:40,810 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2020-10-12 15:46:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:46:40,810 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-12 15:46:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:40,812 INFO L225 Difference]: With dead ends: 76 [2020-10-12 15:46:40,812 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:46:40,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:46:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:46:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 41. [2020-10-12 15:46:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 15:46:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-12 15:46:40,819 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 39 [2020-10-12 15:46:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:40,819 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-12 15:46:40,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:46:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-12 15:46:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:46:40,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:40,820 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:40,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:46:40,821 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash -100029475, now seen corresponding path program 8 times [2020-10-12 15:46:40,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:40,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031773662] [2020-10-12 15:46:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:41,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:42,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:42,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:46:42,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:46:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1899 [2020-10-12 15:46:42,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:46:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:46:42,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:46:42,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:42,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:42,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:42,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:42,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:42,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:42,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:43,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:43,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:46:43,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 15:46:43,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:46:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:46:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:46:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:43,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:43,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:43,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:46:43,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:46:43,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:46:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:46:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:43,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031773662] [2020-10-12 15:46:43,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:43,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:46:43,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800869468] [2020-10-12 15:46:43,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:46:43,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:43,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:46:43,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:46:43,507 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 17 states. [2020-10-12 15:46:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:44,377 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-12 15:46:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:46:44,378 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-10-12 15:46:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:44,379 INFO L225 Difference]: With dead ends: 51 [2020-10-12 15:46:44,379 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 15:46:44,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:46:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 15:46:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-12 15:46:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 15:46:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-12 15:46:44,387 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 40 [2020-10-12 15:46:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:44,387 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-12 15:46:44,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:46:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-12 15:46:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:46:44,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:44,388 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:44,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:46:44,388 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:44,389 INFO L82 PathProgramCache]: Analyzing trace with hash -738000801, now seen corresponding path program 9 times [2020-10-12 15:46:44,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:44,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326146771] [2020-10-12 15:46:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:44,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:44,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:46:44,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-12 15:46:44,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:46:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:46:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:46:44,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:45,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:45,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:46:45,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 15:46:45,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:46:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:46:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:46:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:45,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:45,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 15:46:45,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:45,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:46:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:46:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:46:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:45,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326146771] [2020-10-12 15:46:45,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:45,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:46:45,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853486552] [2020-10-12 15:46:45,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:46:45,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:45,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:46:45,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:46:45,471 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 19 states. [2020-10-12 15:46:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:46,079 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2020-10-12 15:46:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:46:46,079 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-10-12 15:46:46,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:46,081 INFO L225 Difference]: With dead ends: 62 [2020-10-12 15:46:46,081 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 15:46:46,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:46:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 15:46:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-12 15:46:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 15:46:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-12 15:46:46,090 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 41 [2020-10-12 15:46:46,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:46,091 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-12 15:46:46,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:46:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-12 15:46:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:46:46,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:46,092 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:46,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:46:46,092 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:46,092 INFO L82 PathProgramCache]: Analyzing trace with hash 959724573, now seen corresponding path program 10 times [2020-10-12 15:46:46,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:46,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485204007] [2020-10-12 15:46:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:46:47,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:46:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-12 15:46:47,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:46:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:46:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:46:47,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:47,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:47,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:47,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:47,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:47,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:47,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:48,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:48,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:46:48,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 15:46:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:46:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:46:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:48,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:46:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:48,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:48,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:46:48,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:46:48,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:46:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:46:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:46:48,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485204007] [2020-10-12 15:46:48,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:48,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:46:48,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271464629] [2020-10-12 15:46:48,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:46:48,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:48,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:46:48,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:46:48,890 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 22 states. [2020-10-12 15:46:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:50,200 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-10-12 15:46:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:46:50,200 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2020-10-12 15:46:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:50,201 INFO L225 Difference]: With dead ends: 60 [2020-10-12 15:46:50,201 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 15:46:50,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 15:46:50,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 15:46:50,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-12 15:46:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 15:46:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-12 15:46:50,209 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 42 [2020-10-12 15:46:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:50,209 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-12 15:46:50,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:46:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-12 15:46:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:46:50,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:50,210 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:50,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:46:50,211 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash -637060350, now seen corresponding path program 11 times [2020-10-12 15:46:50,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:50,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266343673] [2020-10-12 15:46:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:50,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:53,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:53,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:46:53,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:46:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2891 [2020-10-12 15:46:53,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:46:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:46:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:46:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:54,988 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 276 DAG size of output: 67 [2020-10-12 15:46:56,954 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 276 DAG size of output: 68 [2020-10-12 15:46:56,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:56,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:56,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:56,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:46:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:57,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:46:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-12 15:46:57,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:46:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:46:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:47:02,217 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 727 DAG size of output: 31 [2020-10-12 15:47:03,254 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 40 [2020-10-12 15:47:04,299 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 40 [2020-10-12 15:47:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:47:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:04,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:04,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 15:47:04,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 15:47:04,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:47:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:47:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:47:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:04,885 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-10-12 15:47:05,365 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-10-12 15:47:05,667 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-10-12 15:47:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:47:05,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266343673] [2020-10-12 15:47:05,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:05,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:47:05,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968740540] [2020-10-12 15:47:05,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:47:05,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:47:05,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:47:05,687 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 19 states. [2020-10-12 15:47:06,492 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2020-10-12 15:47:07,337 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-10-12 15:47:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:07,428 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-10-12 15:47:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:47:07,428 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2020-10-12 15:47:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:07,429 INFO L225 Difference]: With dead ends: 55 [2020-10-12 15:47:07,429 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 15:47:07,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:47:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 15:47:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-12 15:47:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:47:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-12 15:47:07,438 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 44 [2020-10-12 15:47:07,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:07,438 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-12 15:47:07,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:47:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-12 15:47:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:47:07,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:07,438 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:47:07,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:47:07,439 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:07,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:07,439 INFO L82 PathProgramCache]: Analyzing trace with hash -206088742, now seen corresponding path program 12 times [2020-10-12 15:47:07,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:07,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30318553] [2020-10-12 15:47:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:08,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:08,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:47:08,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:47:08,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-12 15:47:08,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:47:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:47:08,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:47:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:47:08,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:47:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:08,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:08,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:47:08,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:47:08,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:08,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:47:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:47:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:08,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:08,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:47:08,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:08,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 15:47:08,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:47:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:08,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:47:08,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:47:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:47:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:08,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:08,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:47:08,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:08,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:47:08,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:47:08,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:08,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:47:08,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:47:08,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30318553] [2020-10-12 15:47:08,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:08,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:47:08,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475102253] [2020-10-12 15:47:08,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:47:08,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:08,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:47:08,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:47:08,961 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 21 states. [2020-10-12 15:47:09,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:09,756 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-10-12 15:47:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:47:09,759 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 45 [2020-10-12 15:47:09,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:09,760 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:47:09,760 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 15:47:09,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 15:47:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 15:47:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-12 15:47:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 15:47:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-10-12 15:47:09,775 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 45 [2020-10-12 15:47:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:09,776 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-10-12 15:47:09,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:47:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-10-12 15:47:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:47:09,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:09,777 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:47:09,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:47:09,777 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash 269129218, now seen corresponding path program 13 times [2020-10-12 15:47:09,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:09,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024600128] [2020-10-12 15:47:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:12,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:47:12,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:47:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-12 15:47:12,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 15:47:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:47:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:47:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:47:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:12,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:12,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:47:12,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:47:12,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:12,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:12,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:12,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:47:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:47:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 15:47:12,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:47:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:47:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:13,415 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-12 15:47:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 15:47:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:13,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:13,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:47:13,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:47:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:47:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:47:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:47:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:47:14,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024600128] [2020-10-12 15:47:14,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:14,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 15:47:14,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050131228] [2020-10-12 15:47:14,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 15:47:14,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:14,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 15:47:14,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:47:14,171 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 25 states. [2020-10-12 15:47:15,147 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-12 15:47:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:16,043 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-10-12 15:47:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:47:16,044 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-10-12 15:47:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:16,045 INFO L225 Difference]: With dead ends: 64 [2020-10-12 15:47:16,045 INFO L226 Difference]: Without dead ends: 55 [2020-10-12 15:47:16,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 15:47:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-12 15:47:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-12 15:47:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 15:47:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-12 15:47:16,052 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 46 [2020-10-12 15:47:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:16,053 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-12 15:47:16,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 15:47:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-12 15:47:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:47:16,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:16,053 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:47:16,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:47:16,054 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:16,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1845000451, now seen corresponding path program 14 times [2020-10-12 15:47:16,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:16,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907173753] [2020-10-12 15:47:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:16,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:20,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:20,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:47:20,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:47:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4318 [2020-10-12 15:47:20,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:47:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:47:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:47:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1