/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-simple/dll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:46:31,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:46:31,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:46:31,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:46:31,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:46:31,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:46:31,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:46:31,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:46:31,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:46:31,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:46:31,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:46:31,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:46:31,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:46:31,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:46:31,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:46:31,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:46:31,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:46:31,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:46:31,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:46:31,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:46:31,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:46:31,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:46:32,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:46:32,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:46:32,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:46:32,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:46:32,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:46:32,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:46:32,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:46:32,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:46:32,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:46:32,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:46:32,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:46:32,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:46:32,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:46:32,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:46:32,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:46:32,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:46:32,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:46:32,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:46:32,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:46:32,036 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 [2020-10-28 14:46:32,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:46:32,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:46:32,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:46:32,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:46:32,092 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:46:32,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:46:32,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:46:32,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:46:32,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:46:32,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:46:32,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:46:32,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:46:32,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:46:32,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:46:32,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:46:32,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:46:32,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:46:32,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:46:32,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:46:32,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:46:32,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:46:32,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:46:32,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:46:32,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:46:32,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:46:32,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:46:32,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:46:32,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:46:32,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:46:32,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:46:32,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:46:32,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:46:32,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:46:32,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:46:32,537 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:46:32,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2020-10-28 14:46:32,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69950184/c48644250fb542e9876daaacd104351b/FLAGf507a513d [2020-10-28 14:46:33,437 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:46:33,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2020-10-28 14:46:33,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69950184/c48644250fb542e9876daaacd104351b/FLAGf507a513d [2020-10-28 14:46:33,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69950184/c48644250fb542e9876daaacd104351b [2020-10-28 14:46:33,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:46:33,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:46:33,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:46:33,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:46:33,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:46:33,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:46:33" (1/1) ... [2020-10-28 14:46:33,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e34d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:33, skipping insertion in model container [2020-10-28 14:46:33,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:46:33" (1/1) ... [2020-10-28 14:46:33,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:46:33,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:46:34,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:46:34,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:46:34,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:46:34,427 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:46:34,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34 WrapperNode [2020-10-28 14:46:34,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:46:34,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:46:34,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:46:34,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:46:34,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (1/1) ... [2020-10-28 14:46:34,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (1/1) ... [2020-10-28 14:46:34,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (1/1) ... [2020-10-28 14:46:34,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (1/1) ... [2020-10-28 14:46:34,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (1/1) ... [2020-10-28 14:46:34,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (1/1) ... [2020-10-28 14:46:34,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (1/1) ... [2020-10-28 14:46:34,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:46:34,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:46:34,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:46:34,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:46:34,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (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 [2020-10-28 14:46:34,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:46:34,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:46:34,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:46:34,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:46:34,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:46:34,613 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:46:34,613 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-28 14:46:34,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-28 14:46:34,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_remove_last [2020-10-28 14:46:34,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:46:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:46:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:46:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:46:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:46:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:46:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:46:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:46:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:46:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:46:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:46:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:46:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:46:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:46:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:46:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:46:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:46:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:46:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:46:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:46:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:46:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:46:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:46:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:46:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:46:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:46:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:46:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:46:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:46:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:46:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:46:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:46:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:46:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:46:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:46:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:46:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:46:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:46:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:46:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:46:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:46:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:46:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:46:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:46:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:46:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:46:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:46:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:46:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:46:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:46:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:46:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:46:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:46:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:46:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:46:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:46:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:46:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:46:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:46:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:46:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:46:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:46:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:46:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:46:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:46:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:46:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:46:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:46:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:46:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:46:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:46:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:46:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:46:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:46:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:46:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:46:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:46:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:46:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:46:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:46:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:46:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:46:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:46:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_remove_last [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:46:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:46:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:46:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:46:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:46:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:46:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:46:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:46:35,107 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:46:35,234 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:46:35,234 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 14:46:35,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:46:35 BoogieIcfgContainer [2020-10-28 14:46:35,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:46:35,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:46:35,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:46:35,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:46:35,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:46:33" (1/3) ... [2020-10-28 14:46:35,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a89507f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:46:35, skipping insertion in model container [2020-10-28 14:46:35,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:46:34" (2/3) ... [2020-10-28 14:46:35,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a89507f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:46:35, skipping insertion in model container [2020-10-28 14:46:35,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:46:35" (3/3) ... [2020-10-28 14:46:35,247 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2020-10-28 14:46:35,261 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:46:35,268 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:46:35,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:46:35,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:46:35,321 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:46:35,321 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:46:35,321 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:46:35,322 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:46:35,322 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:46:35,322 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:46:35,322 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:46:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-28 14:46:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:46:35,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:35,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:35,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:35,358 INFO L82 PathProgramCache]: Analyzing trace with hash 379255624, now seen corresponding path program 1 times [2020-10-28 14:46:35,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:35,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084095550] [2020-10-28 14:46:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:36,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:36,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:46:36,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-28 14:46:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:36,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 14:46:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:36,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:46:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:36,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:36,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:46:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:36,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:36,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:36,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:46:36,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:46:36,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:36,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:36,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:36,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:36,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:46:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:46:36,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084095550] [2020-10-28 14:46:36,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:46:36,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:46:36,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108745879] [2020-10-28 14:46:36,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:46:36,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:36,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:46:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:46:36,442 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-28 14:46:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:36,639 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-28 14:46:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:46:36,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 14:46:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:36,650 INFO L225 Difference]: With dead ends: 68 [2020-10-28 14:46:36,650 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 14:46:36,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:46:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 14:46:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-28 14:46:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 14:46:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 14:46:36,703 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 26 [2020-10-28 14:46:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:36,704 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 14:46:36,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:46:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 14:46:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:46:36,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:36,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:36,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:46:36,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:36,709 INFO L82 PathProgramCache]: Analyzing trace with hash 178851567, now seen corresponding path program 1 times [2020-10-28 14:46:36,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:36,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788095891] [2020-10-28 14:46:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:37,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:37,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:46:37,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-28 14:46:37,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:37,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:37,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:46:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 14:46:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:37,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:37,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:37,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:46:37,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:37,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:37,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:46:37,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 14:46:37,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:37,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:46:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:37,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:37,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:46:37,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:37,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:46:37,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788095891] [2020-10-28 14:46:37,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:46:37,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:46:37,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412818894] [2020-10-28 14:46:37,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:46:37,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:37,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:46:37,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:46:37,495 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 14:46:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:37,762 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-28 14:46:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:46:37,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-28 14:46:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:37,766 INFO L225 Difference]: With dead ends: 46 [2020-10-28 14:46:37,766 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 14:46:37,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:46:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 14:46:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-28 14:46:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 14:46:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-28 14:46:37,789 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 26 [2020-10-28 14:46:37,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:37,790 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-28 14:46:37,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:46:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-28 14:46:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:46:37,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:37,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:37,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:46:37,794 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2131328981, now seen corresponding path program 1 times [2020-10-28 14:46:37,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:37,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130038629] [2020-10-28 14:46:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 14:46:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:46:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2239 [2020-10-28 14:46:40,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:40,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:46:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 14:46:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:40,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:40,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:40,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:46:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:40,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:40,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:40,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:46:40,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 14:46:40,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:40,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:46:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:40,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:40,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:46:40,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:40,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 14:46:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:40,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:46:40,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:46:40,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:40,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:46:40,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:46:40,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130038629] [2020-10-28 14:46:40,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:40,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:46:40,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570516139] [2020-10-28 14:46:40,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:46:40,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:40,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:46:40,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:46:40,355 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2020-10-28 14:46:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:40,565 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-28 14:46:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:46:40,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-28 14:46:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:40,567 INFO L225 Difference]: With dead ends: 47 [2020-10-28 14:46:40,568 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 14:46:40,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:46:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 14:46:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-28 14:46:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:46:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-28 14:46:40,578 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 33 [2020-10-28 14:46:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:40,579 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-28 14:46:40,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:46:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-28 14:46:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:46:40,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:40,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:40,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:46:40,581 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:40,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:40,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2019658897, now seen corresponding path program 2 times [2020-10-28 14:46:40,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:40,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053567152] [2020-10-28 14:46:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 14:46:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:46:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3535 [2020-10-28 14:46:44,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:44,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:46:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:46:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 14:46:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:44,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:46:44,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:44,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:44,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:44,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:46:44,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:46:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:44,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 14:46:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:44,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:44,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:46:44,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:44,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:46:44,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 14:46:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:46:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:46:44,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:44,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:46:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:46:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 14:46:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:44,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:44,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:46:44,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:46:44,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:44,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:44,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 14:46:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:44,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 14:46:44,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053567152] [2020-10-28 14:46:44,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:46:44,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 14:46:44,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905773087] [2020-10-28 14:46:44,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:46:44,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:44,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:46:44,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:46:44,433 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 10 states. [2020-10-28 14:46:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:44,804 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-28 14:46:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:46:44,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-28 14:46:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:44,806 INFO L225 Difference]: With dead ends: 67 [2020-10-28 14:46:44,806 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:46:44,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:46:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:46:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-28 14:46:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:46:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-28 14:46:44,824 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 40 [2020-10-28 14:46:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:44,824 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-28 14:46:44,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:46:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-28 14:46:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 14:46:44,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:44,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:44,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:46:44,829 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash 533583875, now seen corresponding path program 1 times [2020-10-28 14:46:44,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:44,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315059969] [2020-10-28 14:46:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:49,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:46:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:46:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 14:46:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:49,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:46:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:46:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:46:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:50,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:50,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:46:50,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:50,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:50,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:50,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:46:50,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:46:50,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:50,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:50,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:50,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:50,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:46:50,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:50,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:50,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:50,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:50,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:46:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:50,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:50,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:46:50,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:50,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:50,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:50,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:46:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:50,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:50,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:46:50,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:50,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:46:50,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:50,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:46:50,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 14:46:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:50,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:46:50,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:46:50,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:50,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:46:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:46:50,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 14:46:50,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315059969] [2020-10-28 14:46:50,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:50,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:46:50,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883841955] [2020-10-28 14:46:50,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:46:50,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:50,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:46:50,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:46:50,459 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 11 states. [2020-10-28 14:46:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:51,036 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-28 14:46:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:46:51,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-28 14:46:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:51,040 INFO L225 Difference]: With dead ends: 59 [2020-10-28 14:46:51,040 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 14:46:51,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:46:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 14:46:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-28 14:46:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:46:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-28 14:46:51,051 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 50 [2020-10-28 14:46:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:51,052 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-28 14:46:51,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:46:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-28 14:46:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 14:46:51,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:51,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:51,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:46:51,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:51,055 INFO L82 PathProgramCache]: Analyzing trace with hash 140556865, now seen corresponding path program 1 times [2020-10-28 14:46:51,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:51,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561961488] [2020-10-28 14:46:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:56,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:56,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:46:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:46:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 14:46:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:56,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:46:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 14:46:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:46:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:46:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:46:56,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:46:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:56,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:46:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:56,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:56,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:46:56,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:46:56,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:56,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:56,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:46:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:56,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:56,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:56,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:46:56,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:56,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:46:56,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 14:46:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:56,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:46:56,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:46:56,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:56,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:46:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:46:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 14:46:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:56,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:56,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:56,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:46:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:46:56,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:56,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:46:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:46:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:46:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 14:46:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:46:56,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 14:46:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:46:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:46:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:46:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:56,879 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2020-10-28 14:46:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 14:46:56,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561961488] [2020-10-28 14:46:56,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:46:56,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:46:56,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511672237] [2020-10-28 14:46:56,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:46:56,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:46:56,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:46:56,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:46:56,961 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 11 states. [2020-10-28 14:46:57,319 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-28 14:46:57,636 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-28 14:46:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:46:57,780 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-10-28 14:46:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:46:57,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-28 14:46:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:46:57,783 INFO L225 Difference]: With dead ends: 66 [2020-10-28 14:46:57,783 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 14:46:57,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:46:57,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 14:46:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 14:46:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:46:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-28 14:46:57,800 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 50 [2020-10-28 14:46:57,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:46:57,801 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-28 14:46:57,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:46:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-28 14:46:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 14:46:57,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:46:57,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:46:57,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:46:57,806 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:46:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:46:57,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1447791037, now seen corresponding path program 1 times [2020-10-28 14:46:57,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:46:57,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767597103] [2020-10-28 14:46:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:46:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:46:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:46:59,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:46:59,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:46:59,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:46:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-28 14:46:59,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:46:59,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:46:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 14:46:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 14:46:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 14:46:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:46:59,609 ERROR L253 erpolLogProxyWrapper]: Interpolant 16 not inductive [2020-10-28 14:46:59,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:46:59,610 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-28 14:46:59,621 INFO L168 Benchmark]: Toolchain (without parser) took 25887.60 ms. Allocated memory was 151.0 MB in the beginning and 544.2 MB in the end (delta: 393.2 MB). Free memory was 124.7 MB in the beginning and 340.2 MB in the end (delta: -215.5 MB). Peak memory consumption was 320.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:46:59,622 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:46:59,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.10 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 101.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:46:59,631 INFO L168 Benchmark]: Boogie Preprocessor took 80.47 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 98.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:46:59,632 INFO L168 Benchmark]: RCFGBuilder took 725.72 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 90.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:46:59,632 INFO L168 Benchmark]: TraceAbstraction took 24378.23 ms. Allocated memory was 151.0 MB in the beginning and 544.2 MB in the end (delta: 393.2 MB). Free memory was 90.2 MB in the beginning and 340.2 MB in the end (delta: -249.9 MB). Peak memory consumption was 285.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:46:59,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 684.10 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 101.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.47 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 98.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 725.72 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 90.2 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24378.23 ms. Allocated memory was 151.0 MB in the beginning and 544.2 MB in the end (delta: 393.2 MB). Free memory was 90.2 MB in the beginning and 340.2 MB in the end (delta: -249.9 MB). Peak memory consumption was 285.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...