/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:24:31,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:24:31,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:24:31,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:24:31,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:24:31,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:24:31,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:24:31,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:24:31,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:24:31,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:24:31,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:24:31,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:24:31,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:24:31,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:24:31,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:24:31,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:24:31,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:24:31,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:24:31,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:24:31,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:24:31,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:24:31,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:24:31,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:24:31,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:24:31,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:24:31,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:24:31,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:24:31,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:24:31,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:24:31,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:24:31,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:24:31,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:24:31,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:24:31,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:24:31,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:24:31,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:24:31,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:24:31,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:24:31,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:24:31,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:24:31,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:24:31,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:24:31,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:24:31,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:24:31,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:24:31,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:24:31,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:24:31,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:24:31,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:24:31,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:24:31,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:24:31,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:24:31,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:24:31,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:24:31,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:24:31,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:24:31,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:24:31,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:24:31,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:24:31,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:24:31,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:24:31,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:24:31,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:24:31,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:24:31,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:24:31,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:24:31,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:24:31,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:24:31,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:24:31,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:24:31,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:24:31,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:24:32,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:24:32,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:24:32,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:24:32,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:24:32,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:24:32,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-29 09:24:32,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e494cf4/94b3c58f8bd14f4596b8c427f500e717/FLAGa19323ba7 [2020-10-29 09:24:33,308 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:24:33,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-29 09:24:33,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e494cf4/94b3c58f8bd14f4596b8c427f500e717/FLAGa19323ba7 [2020-10-29 09:24:33,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e494cf4/94b3c58f8bd14f4596b8c427f500e717 [2020-10-29 09:24:33,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:24:33,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:24:33,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:24:33,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:24:33,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:24:33,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:24:33" (1/1) ... [2020-10-29 09:24:33,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669ca5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:33, skipping insertion in model container [2020-10-29 09:24:33,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:24:33" (1/1) ... [2020-10-29 09:24:33,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:24:33,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:24:33,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:24:34,010 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:24:34,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:24:34,169 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:24:34,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34 WrapperNode [2020-10-29 09:24:34,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:24:34,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:24:34,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:24:34,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:24:34,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... [2020-10-29 09:24:34,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... [2020-10-29 09:24:34,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... [2020-10-29 09:24:34,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... [2020-10-29 09:24:34,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... [2020-10-29 09:24:34,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... [2020-10-29 09:24:34,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... [2020-10-29 09:24:34,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:24:34,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:24:34,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:24:34,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:24:34,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:24:34,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:24:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:24:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:24:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:24:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:24:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:24:34,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-29 09:24:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-29 09:24:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-29 09:24:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-10-29 09:24:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-10-29 09:24:34,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:24:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:24:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:24:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:24:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:24:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:24:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:24:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:24:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:24:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:24:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:24:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:24:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:24:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:24:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:24:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:24:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:24:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:24:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:24:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-29 09:24:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-29 09:24:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-29 09:24:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:24:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:24:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:24:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:24:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:24:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:24:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:24:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:24:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:24:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:24:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:24:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:24:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:24:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:24:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:24:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:24:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:24:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:24:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:24:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:24:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:24:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:24:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:24:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:24:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:24:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:24:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:24:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:24:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:24:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:24:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:24:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:24:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:24:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:24:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:24:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:24:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:24:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:24:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:24:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:24:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:24:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:24:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:24:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:24:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:24:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:24:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:24:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:24:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:24:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:24:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:24:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:24:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:24:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:24:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:24:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:24:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:24:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:24:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:24:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:24:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:24:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:24:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:24:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:24:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:24:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:24:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:24:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:24:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:24:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:24:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:24:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:24:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:24:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:24:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:24:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:24:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:24:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:24:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:24:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:24:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:24:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:24:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:24:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:24:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:24:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-10-29 09:24:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:24:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:24:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-10-29 09:24:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:24:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:24:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:24:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:24:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:24:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:24:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:24:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:24:35,130 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:24:35,130 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:24:35,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:24:35 BoogieIcfgContainer [2020-10-29 09:24:35,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:24:35,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:24:35,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:24:35,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:24:35,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:24:33" (1/3) ... [2020-10-29 09:24:35,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4291c480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:24:35, skipping insertion in model container [2020-10-29 09:24:35,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:24:34" (2/3) ... [2020-10-29 09:24:35,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4291c480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:24:35, skipping insertion in model container [2020-10-29 09:24:35,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:24:35" (3/3) ... [2020-10-29 09:24:35,153 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-10-29 09:24:35,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:24:35,174 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:24:35,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:24:35,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:24:35,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:24:35,230 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:24:35,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:24:35,230 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:24:35,230 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:24:35,230 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:24:35,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:24:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-29 09:24:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 09:24:35,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:35,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:35,273 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:35,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1132079083, now seen corresponding path program 1 times [2020-10-29 09:24:35,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:35,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297240874] [2020-10-29 09:24:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:36,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:24:36,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-29 09:24:36,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:36,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:36,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:24:36,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:24:36,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:24:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:24:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:36,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:24:36,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:36,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:24:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:24:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:24:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:36,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:36,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 09:24:36,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:36,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:24:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:24:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:24:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:36,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:36,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:36,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:24:36,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:36,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:24:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:24:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:36,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:36,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 09:24:36,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:36,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:24:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:36,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:24:36,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:24:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:36,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:36,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:36,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:24:36,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:36,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:24:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:24:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:24:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:36,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:36,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:36,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:24:36,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:36,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:24:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:24:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:24:36,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297240874] [2020-10-29 09:24:36,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:36,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:24:36,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583551532] [2020-10-29 09:24:36,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:24:36,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:36,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:24:36,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:24:36,958 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 7 states. [2020-10-29 09:24:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:37,394 INFO L93 Difference]: Finished difference Result 87 states and 113 transitions. [2020-10-29 09:24:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:24:37,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-29 09:24:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:37,408 INFO L225 Difference]: With dead ends: 87 [2020-10-29 09:24:37,408 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 09:24:37,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:24:37,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 09:24:37,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-29 09:24:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:24:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-29 09:24:37,469 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 47 [2020-10-29 09:24:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:37,469 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-29 09:24:37,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:24:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-29 09:24:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:24:37,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:37,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:37,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:24:37,473 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:37,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:37,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1375197484, now seen corresponding path program 1 times [2020-10-29 09:24:37,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:37,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332570214] [2020-10-29 09:24:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:24:38,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-29 09:24:38,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:24:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 09:24:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:24:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:38,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:24:38,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:38,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:24:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:38,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:24:38,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:24:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:24:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:38,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:24:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:38,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:24:38,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:38,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:24:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:38,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 09:24:38,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:24:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:38,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:38,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:24:38,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 09:24:38,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:38,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:24:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:24:38,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332570214] [2020-10-29 09:24:38,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:24:38,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 09:24:38,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068261054] [2020-10-29 09:24:38,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:24:38,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:38,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:24:38,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:24:38,471 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 11 states. [2020-10-29 09:24:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:39,238 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 09:24:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:24:39,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-29 09:24:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:39,241 INFO L225 Difference]: With dead ends: 60 [2020-10-29 09:24:39,241 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 09:24:39,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:24:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 09:24:39,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-29 09:24:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 09:24:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-29 09:24:39,255 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 49 [2020-10-29 09:24:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:39,256 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-29 09:24:39,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:24:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-29 09:24:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:24:39,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:39,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:39,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:24:39,258 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1633362922, now seen corresponding path program 1 times [2020-10-29 09:24:39,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:39,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590913055] [2020-10-29 09:24:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:24:39,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-29 09:24:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:39,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 09:24:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:24:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:39,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:39,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:39,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:39,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:24:39,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:39,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:39,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:24:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:39,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:39,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:24:39,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:39,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:24:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:39,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:39,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:24:39,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:39,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:24:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:39,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:39,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:39,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:24:39,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:39,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:39,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:24:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:39,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:39,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:24:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:39,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:24:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:24:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:24:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:39,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:39,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:24:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:24:39,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:39,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:24:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 09:24:40,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590913055] [2020-10-29 09:24:40,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:24:40,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:24:40,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221037595] [2020-10-29 09:24:40,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:24:40,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:40,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:24:40,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:24:40,015 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 9 states. [2020-10-29 09:24:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:40,532 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-10-29 09:24:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:24:40,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-29 09:24:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:40,535 INFO L225 Difference]: With dead ends: 75 [2020-10-29 09:24:40,535 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 09:24:40,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:24:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 09:24:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-29 09:24:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 09:24:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-29 09:24:40,557 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 49 [2020-10-29 09:24:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:40,558 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-29 09:24:40,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:24:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-29 09:24:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:24:40,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:40,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:40,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:24:40,563 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:40,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1677512552, now seen corresponding path program 1 times [2020-10-29 09:24:40,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:40,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113613100] [2020-10-29 09:24:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:40,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:24:44,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3399 [2020-10-29 09:24:44,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:24:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 09:24:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:24:44,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:44,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:24:44,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:24:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:44,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:24:44,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:24:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:44,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:24:44,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:24:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 09:24:44,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:24:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:44,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 09:24:44,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:44,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:24:44,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:24:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:44,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:44,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:24:44,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 09:24:44,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:44,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:24:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:24:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:24:44,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113613100] [2020-10-29 09:24:44,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:44,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:24:44,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535533118] [2020-10-29 09:24:44,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:24:44,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:44,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:24:44,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:24:44,735 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 16 states. [2020-10-29 09:24:45,777 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-29 09:24:46,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:46,098 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-29 09:24:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:24:46,099 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-10-29 09:24:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:46,101 INFO L225 Difference]: With dead ends: 63 [2020-10-29 09:24:46,101 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:24:46,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:24:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:24:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-29 09:24:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:24:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-29 09:24:46,126 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 52 [2020-10-29 09:24:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:46,127 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-29 09:24:46,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:24:46,127 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-29 09:24:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:24:46,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:46,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-29 09:24:46,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:24:46,131 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:46,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1419347114, now seen corresponding path program 1 times [2020-10-29 09:24:46,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:46,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949038672] [2020-10-29 09:24:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:47,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:47,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 09:24:47,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:24:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1241 [2020-10-29 09:24:47,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:47,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:24:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 09:24:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:24:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:47,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:47,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:47,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:47,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:24:47,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:47,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:47,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:47,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:24:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:47,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:47,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:24:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:47,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:47,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:24:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:47,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:47,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:47,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:24:47,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:47,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:47,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:24:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:47,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:24:47,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:47,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:24:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:47,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:47,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:47,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:47,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:24:47,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:47,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:47,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:47,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:24:47,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:24:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:47,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:47,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:24:47,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:24:47,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:47,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:24:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:24:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:24:48,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949038672] [2020-10-29 09:24:48,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:48,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:24:48,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723361092] [2020-10-29 09:24:48,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:24:48,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:48,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:24:48,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:24:48,088 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 19 states. [2020-10-29 09:24:48,329 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-29 09:24:49,101 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-29 09:24:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:50,083 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-10-29 09:24:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:24:50,084 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-29 09:24:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:50,088 INFO L225 Difference]: With dead ends: 62 [2020-10-29 09:24:50,088 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 09:24:50,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:24:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 09:24:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2020-10-29 09:24:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 09:24:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-29 09:24:50,100 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 52 [2020-10-29 09:24:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:50,100 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-29 09:24:50,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:24:50,101 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-29 09:24:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:24:50,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:50,102 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:24:50,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:24:50,102 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:50,103 INFO L82 PathProgramCache]: Analyzing trace with hash 970297772, now seen corresponding path program 2 times [2020-10-29 09:24:50,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:50,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252672075] [2020-10-29 09:24:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:51,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:51,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 09:24:51,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-10-29 09:24:51,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:51,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:24:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 09:24:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:24:51,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:51,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:51,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:51,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:24:51,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:51,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:51,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:24:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:51,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:24:51,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:51,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:24:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:51,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:51,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:51,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:51,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:24:51,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:51,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:24:51,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:51,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:24:51,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:24:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:51,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:51,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 09:24:51,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:51,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:24:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:51,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:24:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:51,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:51,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:51,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:24:51,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:51,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:24:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:24:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:52,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:52,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:24:52,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 09:24:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:52,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:52,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:24:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:24:52,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252672075] [2020-10-29 09:24:52,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:52,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:24:52,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216406330] [2020-10-29 09:24:52,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:24:52,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:52,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:24:52,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:24:52,707 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 21 states. [2020-10-29 09:24:53,249 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-29 09:24:54,566 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-29 09:24:54,805 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-29 09:24:55,042 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-29 09:24:55,315 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-29 09:24:55,527 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-29 09:24:55,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:24:55,787 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-29 09:24:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:24:55,788 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-29 09:24:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:24:55,792 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:24:55,792 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 09:24:55,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 09:24:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 09:24:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2020-10-29 09:24:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 09:24:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-29 09:24:55,820 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 55 [2020-10-29 09:24:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:24:55,823 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-29 09:24:55,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:24:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-29 09:24:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:24:55,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:24:55,824 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:24:55,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:24:55,824 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:24:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:24:55,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1228463210, now seen corresponding path program 2 times [2020-10-29 09:24:55,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:24:55,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304412768] [2020-10-29 09:24:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:24:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:55,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 09:24:57,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-29 09:24:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:57,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:24:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:24:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:24:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:24:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:57,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:24:57,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:24:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:57,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:24:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:24:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:57,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:24:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:24:57,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:57,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:24:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:24:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:24:57,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:24:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:57,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:57,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 09:24:57,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:57,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:24:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:24:57,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:24:57,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:57,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 09:24:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:57,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:24:57,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:24:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:24:57,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:57,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:24:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:24:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:24:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 09:24:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:24:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:24:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:24:57,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:24:57,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:24:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 09:24:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:24:57,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:24:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:24:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:24:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:24:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:24:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 09:24:58,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304412768] [2020-10-29 09:24:58,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:24:58,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:24:58,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234200587] [2020-10-29 09:24:58,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:24:58,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:24:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:24:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:24:58,161 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 17 states. [2020-10-29 09:24:59,209 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-29 09:24:59,577 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-29 09:24:59,770 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-29 09:24:59,964 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-29 09:25:00,149 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-29 09:25:00,341 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-29 09:25:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:00,499 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2020-10-29 09:25:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:25:00,499 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-29 09:25:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:00,501 INFO L225 Difference]: With dead ends: 73 [2020-10-29 09:25:00,502 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:25:00,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:25:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:25:00,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-29 09:25:00,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 09:25:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-29 09:25:00,527 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 55 [2020-10-29 09:25:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:00,529 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-29 09:25:00,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:25:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-29 09:25:00,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:25:00,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:00,532 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-10-29 09:25:00,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:25:00,533 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:00,534 INFO L82 PathProgramCache]: Analyzing trace with hash 518301720, now seen corresponding path program 3 times [2020-10-29 09:25:00,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:00,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151308658] [2020-10-29 09:25:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:25:00,577 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:25:00,577 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:25:00,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:25:00,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:25:00 BoogieIcfgContainer [2020-10-29 09:25:00,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:25:00,624 INFO L168 Benchmark]: Toolchain (without parser) took 27040.19 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 126.1 MB in the beginning and 306.9 MB in the end (delta: -180.8 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:25:00,625 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 104.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:25:00,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.72 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 103.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:25:00,626 INFO L168 Benchmark]: Boogie Preprocessor took 123.06 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 132.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:25:00,626 INFO L168 Benchmark]: RCFGBuilder took 839.52 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 131.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 45.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:25:00,630 INFO L168 Benchmark]: TraceAbstraction took 25479.92 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 130.8 MB in the beginning and 306.9 MB in the end (delta: -176.1 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:25:00,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 104.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 584.72 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 103.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 123.06 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 132.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 839.52 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 131.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 45.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25479.92 ms. Allocated memory was 151.0 MB in the beginning and 385.9 MB in the end (delta: 234.9 MB). Free memory was 130.8 MB in the beginning and 306.9 MB in the end (delta: -176.1 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L533] mlist *head; [L554] int i; [L555] mlist *mylist, *temp; [L556] CALL insert_list(mylist,2) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND TRUE head==((void *)0) [L545] l->next = ((void *)0) [L550] head = l [L551] return 0; [L556] RET insert_list(mylist,2) [L557] CALL insert_list(mylist,5) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L557] RET insert_list(mylist,5) [L558] CALL insert_list(mylist,1) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L558] RET insert_list(mylist,1) [L559] CALL insert_list(mylist,3) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L559] RET insert_list(mylist,3) [L560] CALL, EXPR search_list(head,2) [L535] l = head [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; [L560] RET, EXPR search_list(head,2) [L560] temp = search_list(head,2) [L561] EXPR temp->key [L561] CALL __VERIFIER_assert(temp->key==1) [L14] COND TRUE !(cond) [L15] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_search-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.3s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 545 SDslu, 647 SDs, 0 SdLazy, 2334 SolverSat, 316 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 227464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 174/234 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...