/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:28:26,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:28:26,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:28:26,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:28:26,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:28:26,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:28:26,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:28:26,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:28:26,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:28:26,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:28:26,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:28:26,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:28:26,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:28:26,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:28:26,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:28:26,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:28:26,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:28:26,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:28:26,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:28:26,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:28:26,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:28:26,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:28:26,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:28:26,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:28:26,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:28:26,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:28:26,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:28:26,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:28:26,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:28:26,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:28:26,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:28:26,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:28:26,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:28:26,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:28:26,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:28:26,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:28:26,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:28:26,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:28:26,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:28:26,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:28:26,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:28:26,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:28:26,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:28:26,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:28:26,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:28:26,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:28:26,275 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:28:26,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:28:26,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:28:26,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:28:26,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:28:26,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:28:26,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:28:26,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:28:26,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:28:26,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:28:26,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:28:26,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:28:26,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:28:26,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:28:26,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:28:26,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:28:26,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:28:26,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:28:26,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:28:26,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:28:26,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:28:26,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:28:26,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:28:26,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:28:26,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:28:26,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:28:26,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:28:26,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:28:26,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:28:26,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:28:26,774 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:28:26,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-24 20:28:26,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4949d2c8/9f85eb25a0f44be0af8d9433bf8c17f4/FLAG3dd8f1958 [2020-09-24 20:28:27,507 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:28:27,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-24 20:28:27,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4949d2c8/9f85eb25a0f44be0af8d9433bf8c17f4/FLAG3dd8f1958 [2020-09-24 20:28:27,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4949d2c8/9f85eb25a0f44be0af8d9433bf8c17f4 [2020-09-24 20:28:27,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:28:27,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:28:27,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:27,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:28:27,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:28:27,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:27" (1/1) ... [2020-09-24 20:28:27,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49215c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:27, skipping insertion in model container [2020-09-24 20:28:27,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:27" (1/1) ... [2020-09-24 20:28:27,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:28:27,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:28:28,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:28,301 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:28:28,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:28,409 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:28:28,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28 WrapperNode [2020-09-24 20:28:28,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:28,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:28:28,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:28:28,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:28:28,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... [2020-09-24 20:28:28,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... [2020-09-24 20:28:28,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... [2020-09-24 20:28:28,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... [2020-09-24 20:28:28,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... [2020-09-24 20:28:28,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... [2020-09-24 20:28:28,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... [2020-09-24 20:28:28,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:28:28,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:28:28,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:28:28,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:28:28,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:28:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:28:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:28:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:28:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 20:28:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 20:28:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 20:28:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 20:28:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 20:28:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-24 20:28:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-24 20:28:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:28:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:28:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:28:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 20:28:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 20:28:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 20:28:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 20:28:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 20:28:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 20:28:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 20:28:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 20:28:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 20:28:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 20:28:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 20:28:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 20:28:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 20:28:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 20:28:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 20:28:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 20:28:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 20:28:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 20:28:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 20:28:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 20:28:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 20:28:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 20:28:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 20:28:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 20:28:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 20:28:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 20:28:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 20:28:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 20:28:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 20:28:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 20:28:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 20:28:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 20:28:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 20:28:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 20:28:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 20:28:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 20:28:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 20:28:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 20:28:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 20:28:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:28:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 20:28:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 20:28:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:28:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 20:28:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 20:28:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 20:28:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 20:28:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:28:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 20:28:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 20:28:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 20:28:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:28:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 20:28:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 20:28:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 20:28:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 20:28:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 20:28:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 20:28:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 20:28:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 20:28:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 20:28:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 20:28:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 20:28:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 20:28:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 20:28:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 20:28:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 20:28:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 20:28:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 20:28:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 20:28:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 20:28:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 20:28:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 20:28:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 20:28:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-24 20:28:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:28:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:28:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-24 20:28:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:28:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:28:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:28:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:28:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:28:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:28:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:28:29,172 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:28:29,172 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 20:28:29,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:29 BoogieIcfgContainer [2020-09-24 20:28:29,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:28:29,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:28:29,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:28:29,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:28:29,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:28:27" (1/3) ... [2020-09-24 20:28:29,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7049c916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:29, skipping insertion in model container [2020-09-24 20:28:29,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:28" (2/3) ... [2020-09-24 20:28:29,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7049c916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:29, skipping insertion in model container [2020-09-24 20:28:29,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:29" (3/3) ... [2020-09-24 20:28:29,187 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-24 20:28:29,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:28:29,209 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:28:29,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:28:29,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:28:29,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:28:29,263 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:28:29,263 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:28:29,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:28:29,263 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:28:29,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:28:29,264 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:28:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 20:28:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 20:28:29,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:29,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:29,299 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-24 20:28:29,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:29,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617183857] [2020-09-24 20:28:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:34,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 20:28:34,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 20:28:34,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:28:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 20:28:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:28:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:28:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:34,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:34,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:28:34,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:28:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:28:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:34,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 20:28:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:28:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:34,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:34,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:34,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:28:34,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:34,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:34,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:34,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 20:28:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:34,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:34,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:34,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:28:34,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:28:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 20:28:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:35,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 20:28:35,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:28:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:28:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:35,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 20:28:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:35,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:35,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:28:35,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:28:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:28:35,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 20:28:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 20:28:35,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617183857] [2020-09-24 20:28:35,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:35,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:28:35,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844980249] [2020-09-24 20:28:35,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:28:35,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:35,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:28:35,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:28:35,257 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-24 20:28:36,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:36,093 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-24 20:28:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:28:36,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-24 20:28:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:36,111 INFO L225 Difference]: With dead ends: 187 [2020-09-24 20:28:36,111 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 20:28:36,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:28:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 20:28:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-24 20:28:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 20:28:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-24 20:28:36,181 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-24 20:28:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:36,182 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-24 20:28:36,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:28:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-24 20:28:36,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 20:28:36,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:36,187 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:36,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:36,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:36,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-24 20:28:36,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:36,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545804196] [2020-09-24 20:28:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:37,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-24 20:28:37,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:28:37,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-09-24 20:28:37,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:28:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 20:28:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:28:37,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:37,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:37,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:28:37,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:28:37,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:37,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:28:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:37,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:37,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:37,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:28:37,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:37,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:28:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:37,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:28:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:37,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:28:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:37,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:37,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:28:37,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:37,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 20:28:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:37,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 20:28:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 20:28:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:37,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:37,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:37,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:28:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 20:28:37,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 20:28:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-24 20:28:37,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545804196] [2020-09-24 20:28:37,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:37,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:28:37,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22880421] [2020-09-24 20:28:37,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:28:37,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:37,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:28:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:28:37,585 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-24 20:28:38,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:38,239 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-24 20:28:38,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:28:38,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-24 20:28:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:38,244 INFO L225 Difference]: With dead ends: 113 [2020-09-24 20:28:38,244 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 20:28:38,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:28:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 20:28:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-24 20:28:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 20:28:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-24 20:28:38,259 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-24 20:28:38,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:38,259 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-24 20:28:38,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:28:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-24 20:28:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-24 20:28:38,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:38,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:38,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:38,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:38,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-24 20:28:38,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:38,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073738852] [2020-09-24 20:28:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:39,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:39,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 20:28:39,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:39,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-24 20:28:39,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:28:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 20:28:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:28:39,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:39,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:39,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:28:39,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:28:39,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:28:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:39,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:39,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:39,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:39,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:28:39,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:28:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:39,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:39,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:39,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:28:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:39,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:28:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:39,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:39,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:39,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:39,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 20:28:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:39,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 20:28:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:39,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:39,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 20:28:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:28:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:28:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:39,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 20:28:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:39,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:39,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 20:28:39,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:28:39,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:28:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:28:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:28:39,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-24 20:28:39,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073738852] [2020-09-24 20:28:39,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:39,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 20:28:39,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154358082] [2020-09-24 20:28:39,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:28:39,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:39,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:28:39,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:28:39,875 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-24 20:28:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:41,012 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-24 20:28:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:28:41,013 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-24 20:28:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:41,015 INFO L225 Difference]: With dead ends: 95 [2020-09-24 20:28:41,015 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 20:28:41,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:28:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 20:28:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-24 20:28:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 20:28:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-24 20:28:41,026 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-24 20:28:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:41,027 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-24 20:28:41,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:28:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-24 20:28:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-24 20:28:41,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:41,029 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:41,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:41,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-24 20:28:41,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:41,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204292684] [2020-09-24 20:28:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:46,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:46,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 20:28:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:28:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:28:46,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 20:28:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 20:28:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 20:28:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:46,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:46,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:28:46,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:28:46,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:28:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:46,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:46,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:46,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:28:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:46,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:28:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:46,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:46,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:46,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:28:46,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:46,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:28:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:28:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 20:28:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:28:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:28:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:46,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 20:28:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:47,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:47,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 20:28:47,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:28:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:28:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:28:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 20:28:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:47,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:47,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:28:47,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 20:28:47,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:28:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:28:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 39 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 20:28:47,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204292684] [2020-09-24 20:28:47,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:47,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 20:28:47,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334033964] [2020-09-24 20:28:47,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 20:28:47,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:47,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 20:28:47,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:28:47,941 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 27 states. [2020-09-24 20:28:49,005 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-24 20:28:49,754 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-09-24 20:28:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:51,150 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-09-24 20:28:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 20:28:51,151 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 99 [2020-09-24 20:28:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:51,154 INFO L225 Difference]: With dead ends: 116 [2020-09-24 20:28:51,154 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 20:28:51,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=268, Invalid=2384, Unknown=0, NotChecked=0, Total=2652 [2020-09-24 20:28:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 20:28:51,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88. [2020-09-24 20:28:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 20:28:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-09-24 20:28:51,168 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 99 [2020-09-24 20:28:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:51,169 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-09-24 20:28:51,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 20:28:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-09-24 20:28:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 20:28:51,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:51,171 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:51,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:51,172 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:51,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:51,172 INFO L82 PathProgramCache]: Analyzing trace with hash -891812434, now seen corresponding path program 2 times [2020-09-24 20:28:51,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:51,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907052269] [2020-09-24 20:28:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:56,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:56,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 20:28:56,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:28:56,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-24 20:28:56,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:28:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 20:28:56,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 20:28:56,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:56,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:56,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:28:56,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:28:56,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:28:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:56,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:56,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:56,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:28:56,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:28:56,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:28:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:56,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 20:28:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:28:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:28:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:56,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:56,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:56,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 20:28:56,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:28:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:28:56,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:28:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 20:28:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:57,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:57,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:28:57,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-24 20:28:57,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:28:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:28:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:28:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 20:28:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:57,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:57,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:28:57,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 20:28:57,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:28:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 20:28:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:28:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 20:28:57,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907052269] [2020-09-24 20:28:57,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:28:57,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 20:28:57,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725631368] [2020-09-24 20:28:57,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 20:28:57,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:57,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 20:28:57,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-09-24 20:28:57,930 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 27 states. [2020-09-24 20:29:00,739 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-09-24 20:29:00,880 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-09-24 20:29:01,524 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-09-24 20:29:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:02,306 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-09-24 20:29:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 20:29:02,307 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 107 [2020-09-24 20:29:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:02,308 INFO L225 Difference]: With dead ends: 161 [2020-09-24 20:29:02,309 INFO L226 Difference]: Without dead ends: 137 [2020-09-24 20:29:02,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=578, Invalid=3454, Unknown=0, NotChecked=0, Total=4032 [2020-09-24 20:29:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-24 20:29:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2020-09-24 20:29:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-24 20:29:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-09-24 20:29:02,323 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 107 [2020-09-24 20:29:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:02,323 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-09-24 20:29:02,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 20:29:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-09-24 20:29:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 20:29:02,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:02,326 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:02,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:29:02,326 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:02,327 INFO L82 PathProgramCache]: Analyzing trace with hash -936170188, now seen corresponding path program 1 times [2020-09-24 20:29:02,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:02,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019858868] [2020-09-24 20:29:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:05,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:05,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-24 20:29:05,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3332 [2020-09-24 20:29:05,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 20:29:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 20:29:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 20:29:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:05,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:05,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:05,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:29:05,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:29:05,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:05,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:29:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:05,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:05,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:29:05,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:29:05,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:05,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:05,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 20:29:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:06,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:29:06,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 20:29:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:29:06,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:29:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:29:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:06,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:06,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:29:06,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:06,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 20:29:06,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:29:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:29:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:29:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 20:29:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:07,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:07,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 20:29:07,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 20:29:07,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:29:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:29:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:29:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 20:29:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:08,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:08,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:29:08,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-24 20:29:08,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:29:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:29:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:29:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:29:08,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019858868] [2020-09-24 20:29:08,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:29:08,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-24 20:29:08,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863393336] [2020-09-24 20:29:08,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-24 20:29:08,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:08,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-24 20:29:08,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:29:08,827 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 34 states. [2020-09-24 20:29:09,451 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-24 20:29:09,636 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-09-24 20:29:10,083 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-09-24 20:29:10,374 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2020-09-24 20:29:10,627 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-24 20:29:11,213 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-09-24 20:29:11,860 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-09-24 20:29:13,830 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-09-24 20:29:14,035 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-09-24 20:29:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:14,827 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2020-09-24 20:29:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 20:29:14,828 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 111 [2020-09-24 20:29:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:14,829 INFO L225 Difference]: With dead ends: 141 [2020-09-24 20:29:14,830 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 20:29:14,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=480, Invalid=4212, Unknown=0, NotChecked=0, Total=4692 [2020-09-24 20:29:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 20:29:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2020-09-24 20:29:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-24 20:29:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2020-09-24 20:29:14,847 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 111 [2020-09-24 20:29:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:14,847 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2020-09-24 20:29:14,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-24 20:29:14,847 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2020-09-24 20:29:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-24 20:29:14,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:14,849 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:14,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:29:14,849 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:14,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:14,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1616055414, now seen corresponding path program 3 times [2020-09-24 20:29:14,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:14,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042953863] [2020-09-24 20:29:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking...