/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:20,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:20,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:20,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:20,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:20,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:20,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:20,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:20,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:20,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:20,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:20,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:20,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:20,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:20,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:20,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:20,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:20,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:20,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:20,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:20,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:20,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:20,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:20,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:20,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:20,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:20,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:20,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:20,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:20,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:20,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:20,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:20,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:20,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:20,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:20,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:20,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:20,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:20,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:20,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:20,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:20,846 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 [2020-09-25 07:50:20,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:20,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:20,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:20,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:20,895 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:20,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:20,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:20,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:20,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:20,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:20,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:20,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:20,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:20,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:20,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:20,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:20,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:20,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:20,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:20,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:20,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:20,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:20,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:20,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:20,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:20,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:20,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:20,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:20,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:20,900 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:21,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:21,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:21,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:21,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:21,379 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:21,380 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 07:50:21,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a26247e6b/21d8f59e0c8b446faec8cc185edb3f2f/FLAGaf498f1e3 [2020-09-25 07:50:22,119 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:22,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 07:50:22,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a26247e6b/21d8f59e0c8b446faec8cc185edb3f2f/FLAGaf498f1e3 [2020-09-25 07:50:22,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a26247e6b/21d8f59e0c8b446faec8cc185edb3f2f [2020-09-25 07:50:22,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:22,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:22,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:22,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:22,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:22,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:22" (1/1) ... [2020-09-25 07:50:22,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d6c99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:22, skipping insertion in model container [2020-09-25 07:50:22,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:22" (1/1) ... [2020-09-25 07:50:22,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:22,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:22,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:22,997 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:23,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:23,108 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:23,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23 WrapperNode [2020-09-25 07:50:23,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:23,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:23,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:23,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:23,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (1/1) ... [2020-09-25 07:50:23,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (1/1) ... [2020-09-25 07:50:23,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (1/1) ... [2020-09-25 07:50:23,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (1/1) ... [2020-09-25 07:50:23,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (1/1) ... [2020-09-25 07:50:23,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (1/1) ... [2020-09-25 07:50:23,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (1/1) ... [2020-09-25 07:50:23,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:23,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:23,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:23,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:23,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (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 [2020-09-25 07:50:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 07:50:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 07:50:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 07:50:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 07:50:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 07:50:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 07:50:23,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 07:50:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 07:50:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:50:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:50:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:50:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:50:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:50:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:50:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:50:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:50:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:50:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:50:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:50:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:50:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:50:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:50:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:50:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:50:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:50:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:50:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:50:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:50:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:50:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:50:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:50:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:50:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:50:23,265 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:50:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:50:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:50:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:50:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:50:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:50:23,266 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:50:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:50:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:50:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:50:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:50:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:50:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:50:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:50:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:50:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:50:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:50:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:50:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:50:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:50:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:50:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:50:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:50:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:50:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:50:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:50:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:50:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:50:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:50:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 07:50:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:50:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:50:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:50:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:50:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:50:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:50:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:50:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:50:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:50:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:50:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:50:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:50:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:50:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:50:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:50:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:50:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:50:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:50:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:50:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:50:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:50:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:50:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:50:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:50:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:50:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:50:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:50:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:50:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:50:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:50:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:50:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:50:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:50:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:50:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:50:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:50:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:50:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:50:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:50:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:50:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:50:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:50:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:50:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:50:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:50:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:50:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:50:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 07:50:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 07:50:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:50:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:50:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:50:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 07:50:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 07:50:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:50:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:50:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:50:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 07:50:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:50:23,645 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 07:50:23,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:23,849 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 07:50:23,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:23 BoogieIcfgContainer [2020-09-25 07:50:23,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:23,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:23,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:23,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:23,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:22" (1/3) ... [2020-09-25 07:50:23,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9deacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:23, skipping insertion in model container [2020-09-25 07:50:23,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:23" (2/3) ... [2020-09-25 07:50:23,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9deacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:23, skipping insertion in model container [2020-09-25 07:50:23,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:23" (3/3) ... [2020-09-25 07:50:23,864 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 07:50:23,876 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:23,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:50:23,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:50:23,938 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:50:23,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:50:23,938 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:50:23,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:50:23,938 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:50:23,939 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:50:23,939 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:50:23,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:50:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 07:50:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 07:50:23,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:23,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:23,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 07:50:23,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:23,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345248005] [2020-09-25 07:50:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:24,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:24,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:50:24,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:50:24,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-09-25 07:50:25,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:25,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:25,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 07:50:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:50:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:25,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:25,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:25,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:50:25,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:25,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:25,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:50:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:25,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:25,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:25,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:50:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:25,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345248005] [2020-09-25 07:50:25,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:25,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:25,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467206125] [2020-09-25 07:50:25,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:25,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:25,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:25,203 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-09-25 07:50:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:25,462 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-25 07:50:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:50:25,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 07:50:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:25,483 INFO L225 Difference]: With dead ends: 118 [2020-09-25 07:50:25,483 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 07:50:25,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:50:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 07:50:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-09-25 07:50:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 07:50:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-09-25 07:50:25,564 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-09-25 07:50:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:25,566 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-09-25 07:50:25,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-09-25 07:50:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 07:50:25,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:25,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:25,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:50:25,570 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:25,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:25,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-09-25 07:50:25,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:25,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064515654] [2020-09-25 07:50:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:25,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:26,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:50:26,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:50:26,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-09-25 07:50:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:26,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:50:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:50:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:26,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:26,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:26,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:50:26,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:26,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:26,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:50:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:26,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 07:50:26,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:26,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:50:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:26,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064515654] [2020-09-25 07:50:26,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:26,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:26,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848915249] [2020-09-25 07:50:26,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:26,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:26,497 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-09-25 07:50:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:26,770 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-09-25 07:50:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:50:26,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 07:50:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:26,773 INFO L225 Difference]: With dead ends: 74 [2020-09-25 07:50:26,773 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 07:50:26,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 07:50:26,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-09-25 07:50:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 07:50:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 07:50:26,792 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-09-25 07:50:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:26,792 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 07:50:26,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 07:50:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 07:50:26,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:26,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:26,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:50:26,797 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:26,798 INFO L82 PathProgramCache]: Analyzing trace with hash 278069346, now seen corresponding path program 1 times [2020-09-25 07:50:26,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:26,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381449317] [2020-09-25 07:50:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:31,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:50:31,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:50:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:50:31,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:31,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:50:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:31,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:31,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:31,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:31,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:31,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:50:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:32,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:32,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:32,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 07:50:32,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:32,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:50:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:32,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:50:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:32,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:32,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:32,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:50:32,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:32,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:32,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:32,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:32,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:50:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:32,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381449317] [2020-09-25 07:50:32,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:32,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:50:32,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742684209] [2020-09-25 07:50:32,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:50:32,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:32,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:50:32,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:50:32,082 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 9 states. [2020-09-25 07:50:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:32,441 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-09-25 07:50:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:50:32,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 07:50:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:32,444 INFO L225 Difference]: With dead ends: 76 [2020-09-25 07:50:32,444 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 07:50:32,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:50:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 07:50:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2020-09-25 07:50:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 07:50:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-25 07:50:32,455 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 45 [2020-09-25 07:50:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:32,455 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-25 07:50:32,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:50:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-25 07:50:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 07:50:32,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:32,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:50:32,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:50:32,460 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:32,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:32,460 INFO L82 PathProgramCache]: Analyzing trace with hash -512695656, now seen corresponding path program 2 times [2020-09-25 07:50:32,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:32,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357152266] [2020-09-25 07:50:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:50:37,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:50:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:50:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:50:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 07:50:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:37,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:50:37,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:50:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:50:37,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 07:50:37,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:50:37,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:50:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:50:37,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:50:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 07:50:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:37,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:37,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:37,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:37,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:37,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:50:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:37,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:50:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 07:50:37,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357152266] [2020-09-25 07:50:37,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:37,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 07:50:37,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778488437] [2020-09-25 07:50:37,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:50:37,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:37,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:50:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:50:37,830 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 11 states. [2020-09-25 07:50:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:38,229 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2020-09-25 07:50:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:50:38,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 07:50:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:38,232 INFO L225 Difference]: With dead ends: 115 [2020-09-25 07:50:38,232 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 07:50:38,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:50:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 07:50:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2020-09-25 07:50:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 07:50:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 07:50:38,258 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 63 [2020-09-25 07:50:38,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:38,259 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 07:50:38,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:50:38,259 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 07:50:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 07:50:38,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:38,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:50:38,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:50:38,263 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:38,263 INFO L82 PathProgramCache]: Analyzing trace with hash -182223992, now seen corresponding path program 1 times [2020-09-25 07:50:38,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:38,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420682293] [2020-09-25 07:50:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:50:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:50:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:50:43,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:50:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:50:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:50:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:43,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:43,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:43,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:50:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:50:43,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 07:50:43,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:50:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 07:50:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:43,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:50:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:50:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 07:50:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:43,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:43,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:43,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:50:43,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:43,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:43,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:50:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 07:50:43,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420682293] [2020-09-25 07:50:43,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:43,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 07:50:43,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80758174] [2020-09-25 07:50:43,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:50:43,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:43,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:50:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:50:43,700 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 13 states. [2020-09-25 07:50:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:44,218 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 07:50:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:50:44,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-09-25 07:50:44,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:44,225 INFO L225 Difference]: With dead ends: 128 [2020-09-25 07:50:44,226 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 07:50:44,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-09-25 07:50:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 07:50:44,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-09-25 07:50:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 07:50:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 07:50:44,243 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 75 [2020-09-25 07:50:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:44,245 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 07:50:44,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:50:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 07:50:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 07:50:44,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:44,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:50:44,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:50:44,250 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:44,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1955081336, now seen corresponding path program 2 times [2020-09-25 07:50:44,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:44,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517193094] [2020-09-25 07:50:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 07:50:49,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:50:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:50:49,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 07:50:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:50:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:49,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:49,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:50:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:50:49,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:49,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 07:50:49,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 07:50:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:50:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 07:50:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:50:49,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:50:49,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:49,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 07:50:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:49,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:49,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:50:49,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:49,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:50:49,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:49,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 07:50:49,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517193094] [2020-09-25 07:50:49,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:49,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:50:49,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283802513] [2020-09-25 07:50:49,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:50:49,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:49,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:50:49,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:49,739 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 8 states. [2020-09-25 07:50:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:50,016 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2020-09-25 07:50:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:50:50,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 07:50:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:50,018 INFO L225 Difference]: With dead ends: 130 [2020-09-25 07:50:50,018 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 07:50:50,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:50:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 07:50:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-09-25 07:50:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 07:50:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-09-25 07:50:50,039 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 87 [2020-09-25 07:50:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:50,039 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-09-25 07:50:50,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:50:50,040 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-09-25 07:50:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 07:50:50,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:50,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:50:50,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:50:50,042 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:50,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1865398913, now seen corresponding path program 1 times [2020-09-25 07:50:50,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:50,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775691944] [2020-09-25 07:50:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:50:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:50:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:50:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:55,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:50:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:50:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 07:50:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:55,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:55,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:55,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:55,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:50:55,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:55,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:50:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:55,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:55,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:50:55,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:50:55,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:55,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 07:50:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:55,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 07:50:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:55,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:50:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:50:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:50:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:55,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:50:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:50:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:50:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 07:50:55,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775691944] [2020-09-25 07:50:55,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:50:55,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 07:50:55,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677752123] [2020-09-25 07:50:55,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:50:55,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:55,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:50:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:50:55,721 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 13 states. [2020-09-25 07:50:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:56,944 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-09-25 07:50:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 07:50:56,946 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-09-25 07:50:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:56,948 INFO L225 Difference]: With dead ends: 116 [2020-09-25 07:50:56,949 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 07:50:56,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2020-09-25 07:50:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 07:50:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2020-09-25 07:50:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 07:50:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2020-09-25 07:50:56,961 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 88 [2020-09-25 07:50:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:56,962 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2020-09-25 07:50:56,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:50:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2020-09-25 07:50:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 07:50:56,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:56,964 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:50:56,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:50:56,964 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 07:50:56,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:56,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002806798] [2020-09-25 07:50:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:02,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 07:51:02,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-09-25 07:51:02,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:02,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 07:51:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:51:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:51:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:02,713 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-09-25 07:51:02,888 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-09-25 07:51:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:03,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:51:03,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:51:03,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:51:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:04,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:51:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-09-25 07:51:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:04,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:51:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:51:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:04,425 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-09-25 07:51:04,804 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-09-25 07:51:05,226 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-09-25 07:51:05,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 07:51:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:05,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:51:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 07:51:05,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:05,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:51:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:51:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:06,775 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-09-25 07:51:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:51:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:51:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 07:51:06,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:51:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:51:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:51:07,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002806798] [2020-09-25 07:51:07,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:07,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 07:51:07,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626782645] [2020-09-25 07:51:07,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 07:51:07,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:07,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 07:51:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-09-25 07:51:07,220 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 27 states.