/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:30:52,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:30:52,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:30:52,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:30:52,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:30:52,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:30:52,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:30:52,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:30:52,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:30:52,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:30:52,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:30:52,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:30:52,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:30:52,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:30:52,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:30:52,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:30:52,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:30:52,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:30:52,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:30:52,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:30:52,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:30:52,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:30:52,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:30:52,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:30:52,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:30:52,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:30:52,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:30:52,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:30:52,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:30:52,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:30:52,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:30:52,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:30:52,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:30:52,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:30:52,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:30:52,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:30:52,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:30:52,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:30:52,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:30:52,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:30:52,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:30:52,967 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 05:30:53,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:30:53,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:30:53,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:30:53,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:30:53,007 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:30:53,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:30:53,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:30:53,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:30:53,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:30:53,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:30:53,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:30:53,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:30:53,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:30:53,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:30:53,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:30:53,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:30:53,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:30:53,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:30:53,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:30:53,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:30:53,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:30:53,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:30:53,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:30:53,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:30:53,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:30:53,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:30:53,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:30:53,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:30:53,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:30:53,012 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:30:53,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:30:53,472 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:30:53,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:30:53,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:30:53,481 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:30:53,482 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 05:30:53,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e2e982d3/f985bd7e8a8a418cbcb458c4105bbfc6/FLAG6e650f61b [2020-09-25 05:30:54,191 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:30:54,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 05:30:54,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e2e982d3/f985bd7e8a8a418cbcb458c4105bbfc6/FLAG6e650f61b [2020-09-25 05:30:54,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e2e982d3/f985bd7e8a8a418cbcb458c4105bbfc6 [2020-09-25 05:30:54,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:30:54,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:30:54,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:54,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:30:54,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:30:54,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:54" (1/1) ... [2020-09-25 05:30:54,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:54, skipping insertion in model container [2020-09-25 05:30:54,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:30:54" (1/1) ... [2020-09-25 05:30:54,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:30:54,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:30:55,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:55,058 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:30:55,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:30:55,207 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:30:55,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55 WrapperNode [2020-09-25 05:30:55,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:30:55,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:30:55,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:30:55,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:30:55,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (1/1) ... [2020-09-25 05:30:55,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (1/1) ... [2020-09-25 05:30:55,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (1/1) ... [2020-09-25 05:30:55,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (1/1) ... [2020-09-25 05:30:55,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (1/1) ... [2020-09-25 05:30:55,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (1/1) ... [2020-09-25 05:30:55,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (1/1) ... [2020-09-25 05:30:55,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:30:55,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:30:55,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:30:55,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:30:55,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (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 05:30:55,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:30:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:30:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:30:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 05:30:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 05:30:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 05:30:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 05:30:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 05:30:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 05:30:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 05:30:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:30:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:30:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:30:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:30:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:30:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:30:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:30:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:30:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:30:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:30:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:30:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:30:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:30:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:30:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:30:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:30:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:30:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:30:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:30:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 05:30:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 05:30:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 05:30:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 05:30:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 05:30:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:30:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:30:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:30:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:30:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:30:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:30:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:30:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:30:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:30:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:30:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:30:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:30:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:30:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:30:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:30:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:30:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:30:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:30:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:30:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:30:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:30:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:30:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:30:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:30:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:30:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:30:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:30:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:30:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:30:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:30:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:30:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:30:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:30:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:30:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:30:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:30:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:30:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:30:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:30:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:30:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:30:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:30:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:30:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:30:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:30:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:30:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:30:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:30:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:30:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:30:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:30:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:30:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:30:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:30:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:30:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:30:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:30:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:30:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:30:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:30:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:30:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:30:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:30:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:30:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:30:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:30:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:30:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:30:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:30:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:30:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:30:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:30:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:30:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:30:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:30:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:30:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:30:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:30:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:30:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:30:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:30:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:30:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:30:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:30:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:30:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:30:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 05:30:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:30:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:30:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 05:30:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:30:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:30:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:30:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:30:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:30:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:30:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:30:56,017 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:30:56,017 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 05:30:56,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:56 BoogieIcfgContainer [2020-09-25 05:30:56,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:30:56,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:30:56,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:30:56,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:30:56,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:30:54" (1/3) ... [2020-09-25 05:30:56,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c4b3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:56, skipping insertion in model container [2020-09-25 05:30:56,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:30:55" (2/3) ... [2020-09-25 05:30:56,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c4b3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:30:56, skipping insertion in model container [2020-09-25 05:30:56,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:30:56" (3/3) ... [2020-09-25 05:30:56,052 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 05:30:56,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:30:56,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:30:56,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:30:56,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:30:56,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:30:56,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:30:56,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:30:56,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:30:56,124 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:30:56,124 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:30:56,124 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:30:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 05:30:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 05:30:56,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:30:56,164 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:30:56,164 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:30:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:30:56,173 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 05:30:56,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:30:56,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875191112] [2020-09-25 05:30:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:30:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:30:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:30:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 05:31:01,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 05:31:01,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 05:31:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:31:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:01,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:01,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:31:01,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:31:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:01,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:31:01,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:01,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:31:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:01,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:01,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:31:01,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:01,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 05:31:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:31:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 05:31:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:01,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:31:01,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:01,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 05:31:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:01,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:01,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:31:01,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:31:01,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:01,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 05:31:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:31:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 05:31:01,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875191112] [2020-09-25 05:31:01,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:01,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:31:01,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768622082] [2020-09-25 05:31:01,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:31:01,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:31:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:31:01,846 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-09-25 05:31:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:02,064 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-25 05:31:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:31:02,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-25 05:31:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:02,080 INFO L225 Difference]: With dead ends: 100 [2020-09-25 05:31:02,081 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 05:31:02,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 05:31:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 05:31:02,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 05:31:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 05:31:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-09-25 05:31:02,151 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 82 [2020-09-25 05:31:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:02,154 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-09-25 05:31:02,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:31:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-09-25 05:31:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 05:31:02,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:02,159 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:02,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:31:02,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1818163735, now seen corresponding path program 1 times [2020-09-25 05:31:02,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:02,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085233083] [2020-09-25 05:31:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 05:31:07,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:31:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:31:07,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:31:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:31:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:31:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:07,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:31:07,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:31:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:07,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 05:31:07,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:31:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:07,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:31:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:07,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:07,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 05:31:07,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:31:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:31:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 05:31:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:07,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:31:07,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:31:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 05:31:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:07,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:31:07,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:31:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 05:31:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:07,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:07,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:07,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:07,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:31:07,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:07,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:31:07,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:07,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 05:31:07,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085233083] [2020-09-25 05:31:07,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:07,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:31:07,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294715853] [2020-09-25 05:31:07,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:31:07,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:07,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:31:07,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:31:07,616 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 9 states. [2020-09-25 05:31:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:08,267 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-09-25 05:31:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:31:08,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-25 05:31:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:08,271 INFO L225 Difference]: With dead ends: 140 [2020-09-25 05:31:08,271 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 05:31:08,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:31:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 05:31:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 05:31:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 05:31:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 05:31:08,302 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 86 [2020-09-25 05:31:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:08,304 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 05:31:08,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:31:08,304 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 05:31:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 05:31:08,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:08,308 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:08,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:31:08,310 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:08,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 05:31:08,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:08,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59796153] [2020-09-25 05:31:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 05:31:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-09-25 05:31:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:31:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 05:31:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:31:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:09,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:09,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:31:09,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:31:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:09,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:09,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:31:09,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:31:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:09,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:09,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:31:09,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 05:31:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:09,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:31:09,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:09,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 05:31:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:09,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:09,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 05:31:09,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:31:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:09,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 05:31:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:09,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:09,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:09,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:09,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:31:09,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:09,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 05:31:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:31:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 05:31:09,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59796153] [2020-09-25 05:31:09,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:09,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 05:31:09,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849669562] [2020-09-25 05:31:09,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:31:09,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:09,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:31:09,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:31:09,674 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 05:31:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:10,403 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 05:31:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:31:10,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 05:31:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:10,408 INFO L225 Difference]: With dead ends: 113 [2020-09-25 05:31:10,408 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 05:31:10,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-25 05:31:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 05:31:10,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 05:31:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 05:31:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 05:31:10,434 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 05:31:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:10,435 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 05:31:10,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:31:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 05:31:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 05:31:10,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:10,436 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:10,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:31:10,437 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:10,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:10,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 05:31:10,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:10,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249445316] [2020-09-25 05:31:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:11,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 05:31:11,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-09-25 05:31:11,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:11,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:31:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 05:31:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:31:11,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:11,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:11,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:31:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:11,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:11,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:31:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:11,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:11,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:31:11,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:11,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:11,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:31:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:11,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:11,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:11,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:31:11,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:11,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:11,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:11,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 05:31:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:11,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:11,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:31:11,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:11,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 05:31:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:11,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:11,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:11,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 05:31:11,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:11,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:31:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:31:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:11,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 05:31:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:11,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:31:11,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 05:31:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:11,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:31:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:31:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:31:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 05:31:11,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249445316] [2020-09-25 05:31:11,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:11,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 05:31:11,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675561395] [2020-09-25 05:31:11,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:31:11,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:11,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:31:11,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:31:11,996 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 05:31:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:12,919 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 05:31:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:31:12,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 05:31:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:12,921 INFO L225 Difference]: With dead ends: 95 [2020-09-25 05:31:12,921 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 05:31:12,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-09-25 05:31:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 05:31:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 05:31:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 05:31:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 05:31:12,932 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 05:31:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:12,932 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 05:31:12,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:31:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 05:31:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 05:31:12,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:12,934 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:12,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:31:12,935 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:12,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 05:31:12,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:12,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640675235] [2020-09-25 05:31:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 05:31:18,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:31:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 05:31:18,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:31:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 05:31:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:31:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:18,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:31:18,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:31:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:18,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:31:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:18,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:31:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:18,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:18,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:31:18,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:18,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 05:31:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:18,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:31:18,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 05:31:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:18,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 05:31:18,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:31:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:18,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 05:31:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:18,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:31:18,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:18,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 05:31:18,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:31:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 05:31:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:31:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 05:31:18,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640675235] [2020-09-25 05:31:18,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:18,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:31:18,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903620827] [2020-09-25 05:31:18,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:31:18,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:18,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:31:18,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:31:18,762 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 12 states. [2020-09-25 05:31:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:19,833 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 05:31:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 05:31:19,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-09-25 05:31:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:19,835 INFO L225 Difference]: With dead ends: 128 [2020-09-25 05:31:19,835 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 05:31:19,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-09-25 05:31:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 05:31:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2020-09-25 05:31:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 05:31:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-09-25 05:31:19,854 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 99 [2020-09-25 05:31:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:19,855 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-09-25 05:31:19,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:31:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-09-25 05:31:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 05:31:19,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:19,857 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:19,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:31:19,858 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:19,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:19,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1242921541, now seen corresponding path program 1 times [2020-09-25 05:31:19,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:19,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606987665] [2020-09-25 05:31:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:24,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 05:31:24,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:31:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:24,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 05:31:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 05:31:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:31:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:25,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:25,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:25,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:25,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:25,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:31:25,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:25,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:25,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:31:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:25,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:25,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:25,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:31:25,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:25,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:25,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:31:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:25,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:25,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:25,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:25,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:25,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:31:25,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:25,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 05:31:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:25,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:25,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:25,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:25,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:25,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 05:31:25,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:25,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:31:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:31:25,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 05:31:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:25,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:25,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:25,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 05:31:25,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:25,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:31:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:31:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:31:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 05:31:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:26,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:31:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 05:31:26,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:26,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:31:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:26,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:31:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 05:31:26,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606987665] [2020-09-25 05:31:26,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:26,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 05:31:26,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745826937] [2020-09-25 05:31:26,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 05:31:26,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:26,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 05:31:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=646, Unknown=0, NotChecked=0, Total=702 [2020-09-25 05:31:26,492 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 27 states. [2020-09-25 05:31:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:29,136 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2020-09-25 05:31:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 05:31:29,137 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 101 [2020-09-25 05:31:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:29,139 INFO L225 Difference]: With dead ends: 113 [2020-09-25 05:31:29,139 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 05:31:29,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2020-09-25 05:31:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 05:31:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-09-25 05:31:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 05:31:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-09-25 05:31:29,153 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 101 [2020-09-25 05:31:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:29,153 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-09-25 05:31:29,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 05:31:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-09-25 05:31:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 05:31:29,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:29,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:31:29,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:31:29,156 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:29,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:29,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1667050223, now seen corresponding path program 2 times [2020-09-25 05:31:29,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:29,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095004655] [2020-09-25 05:31:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:34,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:34,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 05:31:34,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:31:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:31:34,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:34,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 05:31:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:31:34,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:31:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:34,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:34,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:31:34,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:31:34,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:34,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:34,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:34,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:34,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:31:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:34,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:34,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:34,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:31:34,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:31:34,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:34,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:34,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 05:31:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:34,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:34,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:34,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 05:31:34,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:34,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:34,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:31:34,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 05:31:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:34,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:34,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:34,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:34,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 05:31:34,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:34,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:31:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:31:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:31:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 05:31:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:35,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:35,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:31:35,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 05:31:35,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:35,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:31:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:31:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:31:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:31:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 05:31:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:35,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:35,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:31:35,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:35,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 05:31:35,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:35,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:31:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 05:31:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:31:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 05:31:36,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095004655] [2020-09-25 05:31:36,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:36,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 05:31:36,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267289131] [2020-09-25 05:31:36,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 05:31:36,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 05:31:36,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-09-25 05:31:36,117 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 27 states. [2020-09-25 05:31:38,531 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-09-25 05:31:39,116 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-09-25 05:31:39,286 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-09-25 05:31:39,536 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-09-25 05:31:39,811 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-09-25 05:31:40,003 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-09-25 05:31:40,306 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 05:31:40,510 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-09-25 05:31:40,688 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55