/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block 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=BIGGEST --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 -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:48:22,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:48:22,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:48:22,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:48:22,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:48:22,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:48:22,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:48:22,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:48:22,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:48:22,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:48:22,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:48:22,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:48:22,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:48:22,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:48:22,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:48:22,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:48:22,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:48:22,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:48:22,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:48:22,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:48:22,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:48:22,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:48:22,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:48:22,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:48:22,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:48:22,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:48:22,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:48:22,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:48:22,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:48:22,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:48:22,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:48:22,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:48:22,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:48:22,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:48:22,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:48:22,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:48:22,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:48:22,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:48:22,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:48:22,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:48:22,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:48:22,979 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 [2020-10-12 15:48:23,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:48:23,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:48:23,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:48:23,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:48:23,028 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:48:23,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:48:23,029 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:48:23,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:48:23,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:48:23,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:48:23,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:48:23,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:48:23,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:48:23,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:48:23,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:48:23,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:48:23,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:48:23,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:48:23,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:48:23,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:48:23,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:48:23,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:48:23,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:48:23,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:48:23,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:48:23,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:48:23,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:48:23,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:48:23,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:48:23,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:48:23,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:48:23,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:48:23,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:48:23,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:48:23,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:48:23,373 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-10-12 15:48:23,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a02560c/b3015ff465f848da87b9a62a97b5d523/FLAG4580213d0 [2020-10-12 15:48:23,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:48:23,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list-2.i [2020-10-12 15:48:23,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a02560c/b3015ff465f848da87b9a62a97b5d523/FLAG4580213d0 [2020-10-12 15:48:24,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a02560c/b3015ff465f848da87b9a62a97b5d523 [2020-10-12 15:48:24,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:48:24,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:48:24,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:48:24,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:48:24,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:48:24,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263e4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24, skipping insertion in model container [2020-10-12 15:48:24,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:48:24,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:48:24,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:48:24,820 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:48:24,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:48:24,939 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:48:24,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24 WrapperNode [2020-10-12 15:48:24,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:48:24,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:48:24,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:48:24,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:48:24,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:24,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (1/1) ... [2020-10-12 15:48:25,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:48:25,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:48:25,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:48:25,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:48:25,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (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 [2020-10-12 15:48:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:48:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:48:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:48:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:48:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-12 15:48:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-12 15:48:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-12 15:48:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:48:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:48:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:48:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:48:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:48:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:48:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:48:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:48:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:48:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:48:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:48:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:48:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:48:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:48:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:48:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:48:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:48:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:48:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:48:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:48:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:48:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:48:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-12 15:48:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-12 15:48:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-12 15:48:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:48:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:48:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:48:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:48:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:48:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:48:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:48:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:48:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:48:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:48:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:48:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:48:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:48:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:48:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:48:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:48:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:48:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:48:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:48:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:48:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:48:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:48:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:48:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:48:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:48:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:48:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:48:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:48:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:48:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:48:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:48:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:48:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:48:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:48:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:48:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:48:25,072 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:48:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:48:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:48:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:48:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:48:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:48:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:48:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:48:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:48:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:48:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:48:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:48:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:48:25,074 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:48:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:48:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:48:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:48:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:48:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:48:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:48:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:48:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:48:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:48:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:48:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:48:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:48:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:48:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:48:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:48:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:48:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:48:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:48:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:48:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:48:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:48:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:48:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:48:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:48:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:48:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:48:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:48:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:48:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:48:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:48:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:48:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:48:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:48:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:48:25,079 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:48:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:48:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:48:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:48:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:48:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:48:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:48:25,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:48:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:48:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:48:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:48:25,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:48:25,385 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:48:25,559 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:48:25,560 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 15:48:25,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:48:25 BoogieIcfgContainer [2020-10-12 15:48:25,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:48:25,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:48:25,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:48:25,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:48:25,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:48:24" (1/3) ... [2020-10-12 15:48:25,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d891fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:48:25, skipping insertion in model container [2020-10-12 15:48:25,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:24" (2/3) ... [2020-10-12 15:48:25,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d891fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:48:25, skipping insertion in model container [2020-10-12 15:48:25,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:48:25" (3/3) ... [2020-10-12 15:48:25,572 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-10-12 15:48:25,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:48:25,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:48:25,605 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:48:25,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:48:25,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:48:25,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:48:25,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:48:25,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:48:25,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:48:25,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:48:25,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:48:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-12 15:48:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:48:25,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:25,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:25,655 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:25,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1613857984, now seen corresponding path program 1 times [2020-10-12 15:48:25,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:25,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37119080] [2020-10-12 15:48:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:26,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:48:26,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:48:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 15:48:26,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:48:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:48:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:48:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:26,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:26,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:26,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:48:26,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:26,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37119080] [2020-10-12 15:48:26,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:48:26,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:48:26,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283631834] [2020-10-12 15:48:26,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:48:26,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:26,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:48:26,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:48:26,315 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 6 states. [2020-10-12 15:48:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:26,543 INFO L93 Difference]: Finished difference Result 87 states and 121 transitions. [2020-10-12 15:48:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:48:26,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-12 15:48:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:26,556 INFO L225 Difference]: With dead ends: 87 [2020-10-12 15:48:26,556 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 15:48:26,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:48:26,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 15:48:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2020-10-12 15:48:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 15:48:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-12 15:48:26,605 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2020-10-12 15:48:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:26,606 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-12 15:48:26,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:48:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-12 15:48:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 15:48:26,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:26,607 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:26,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:48:26,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2024806125, now seen corresponding path program 1 times [2020-10-12 15:48:26,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:26,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182187110] [2020-10-12 15:48:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:26,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 15:48:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 15:48:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:48:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:48:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:26,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:26,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:26,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:26,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:26,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:26,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:48:26,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:26,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182187110] [2020-10-12 15:48:26,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:48:26,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:48:26,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295809237] [2020-10-12 15:48:26,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:48:26,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:26,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:48:26,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:48:26,799 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2020-10-12 15:48:26,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:26,964 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-12 15:48:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:48:26,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-12 15:48:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:26,967 INFO L225 Difference]: With dead ends: 52 [2020-10-12 15:48:26,967 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 15:48:26,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:48:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 15:48:26,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2020-10-12 15:48:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 15:48:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-12 15:48:26,982 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 22 [2020-10-12 15:48:26,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:26,983 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-12 15:48:26,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:48:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-12 15:48:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 15:48:26,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:26,985 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:26,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:48:26,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:26,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1000103149, now seen corresponding path program 1 times [2020-10-12 15:48:26,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:26,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50933715] [2020-10-12 15:48:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 15:48:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 15:48:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:27,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:48:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:48:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:27,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:27,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:27,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:48:27,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:27,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50933715] [2020-10-12 15:48:27,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:48:27,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:48:27,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976644434] [2020-10-12 15:48:27,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:48:27,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:48:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:48:27,181 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2020-10-12 15:48:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:27,329 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-12 15:48:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:48:27,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-12 15:48:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:27,332 INFO L225 Difference]: With dead ends: 52 [2020-10-12 15:48:27,332 INFO L226 Difference]: Without dead ends: 41 [2020-10-12 15:48:27,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:48:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-12 15:48:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2020-10-12 15:48:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 15:48:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 15:48:27,342 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2020-10-12 15:48:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:27,342 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 15:48:27,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:48:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 15:48:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:48:27,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:27,344 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:27,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:48:27,345 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:27,345 INFO L82 PathProgramCache]: Analyzing trace with hash 422878047, now seen corresponding path program 1 times [2020-10-12 15:48:27,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:27,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347439306] [2020-10-12 15:48:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:27,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:27,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:27,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:48:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:48:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-12 15:48:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:48:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:48:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:27,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:48:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:27,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347439306] [2020-10-12 15:48:27,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:27,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:48:27,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202212978] [2020-10-12 15:48:27,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:48:27,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:48:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:48:27,822 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 10 states. [2020-10-12 15:48:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:28,020 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-12 15:48:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:48:28,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-12 15:48:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:28,022 INFO L225 Difference]: With dead ends: 54 [2020-10-12 15:48:28,022 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:48:28,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:48:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:48:28,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-10-12 15:48:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 15:48:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-12 15:48:28,029 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 24 [2020-10-12 15:48:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:28,030 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-12 15:48:28,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:48:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-12 15:48:28,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:48:28,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:28,031 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:28,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:48:28,032 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:28,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:28,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1286279711, now seen corresponding path program 1 times [2020-10-12 15:48:28,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:28,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241332461] [2020-10-12 15:48:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:28,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:48:28,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:48:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 15:48:28,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:28,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:48:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:48:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:28,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:28,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:28,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:28,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241332461] [2020-10-12 15:48:28,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:28,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:48:28,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130277637] [2020-10-12 15:48:28,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:48:28,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:28,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:48:28,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:48:28,417 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 10 states. [2020-10-12 15:48:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:28,650 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-12 15:48:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:48:28,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-12 15:48:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:28,652 INFO L225 Difference]: With dead ends: 63 [2020-10-12 15:48:28,652 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 15:48:28,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:48:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 15:48:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2020-10-12 15:48:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 15:48:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-12 15:48:28,659 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 24 [2020-10-12 15:48:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:28,659 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-12 15:48:28,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:48:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-12 15:48:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:48:28,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:28,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:28,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:48:28,661 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:28,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:28,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1587413318, now seen corresponding path program 1 times [2020-10-12 15:48:28,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:28,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859697011] [2020-10-12 15:48:28,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:29,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:29,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:48:29,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:48:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-12 15:48:29,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:48:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:48:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:29,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:29,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:48:29,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:29,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859697011] [2020-10-12 15:48:29,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:29,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:48:29,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530741430] [2020-10-12 15:48:29,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:48:29,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:29,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:48:29,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:48:29,623 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 11 states. [2020-10-12 15:48:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:30,005 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-10-12 15:48:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:48:30,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-12 15:48:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:30,007 INFO L225 Difference]: With dead ends: 65 [2020-10-12 15:48:30,007 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 15:48:30,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:48:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 15:48:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2020-10-12 15:48:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 15:48:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-12 15:48:30,014 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 26 [2020-10-12 15:48:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:30,014 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-12 15:48:30,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:48:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-12 15:48:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:48:30,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:30,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:30,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:48:30,017 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:30,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:30,017 INFO L82 PathProgramCache]: Analyzing trace with hash -562710342, now seen corresponding path program 1 times [2020-10-12 15:48:30,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:30,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269417858] [2020-10-12 15:48:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:30,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:48:30,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 15:48:30,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:48:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:48:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:48:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:30,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:30,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:30,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269417858] [2020-10-12 15:48:30,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:30,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:48:30,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48516156] [2020-10-12 15:48:30,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:48:30,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:30,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:48:30,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:48:30,387 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 10 states. [2020-10-12 15:48:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:30,649 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-10-12 15:48:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:48:30,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-12 15:48:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:30,651 INFO L225 Difference]: With dead ends: 71 [2020-10-12 15:48:30,651 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 15:48:30,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:48:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 15:48:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 46. [2020-10-12 15:48:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:48:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-12 15:48:30,656 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 26 [2020-10-12 15:48:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:30,657 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-12 15:48:30,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:48:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-12 15:48:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:48:30,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:30,658 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:30,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:48:30,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:30,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:30,659 INFO L82 PathProgramCache]: Analyzing trace with hash -742131883, now seen corresponding path program 2 times [2020-10-12 15:48:30,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:30,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979073987] [2020-10-12 15:48:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:48:31,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:48:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-12 15:48:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:48:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:48:31,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:31,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:31,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:31,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:31,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:31,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:31,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979073987] [2020-10-12 15:48:31,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:31,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:48:31,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548674115] [2020-10-12 15:48:31,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:48:31,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:31,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:48:31,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:48:31,950 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 12 states. [2020-10-12 15:48:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:32,410 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-12 15:48:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:48:32,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-12 15:48:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:32,412 INFO L225 Difference]: With dead ends: 75 [2020-10-12 15:48:32,412 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 15:48:32,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:48:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 15:48:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2020-10-12 15:48:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 15:48:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-12 15:48:32,418 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 28 [2020-10-12 15:48:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:32,419 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-12 15:48:32,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:48:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-12 15:48:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:48:32,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:32,420 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:48:32,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:48:32,420 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:32,421 INFO L82 PathProgramCache]: Analyzing trace with hash 449917269, now seen corresponding path program 1 times [2020-10-12 15:48:32,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:32,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975263185] [2020-10-12 15:48:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:32,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:32,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:32,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:48:32,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:32,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 15:48:32,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:48:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:48:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:48:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:32,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:32,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:32,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:32,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:32,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975263185] [2020-10-12 15:48:32,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:32,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:48:32,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616263706] [2020-10-12 15:48:32,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:48:32,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:32,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:48:32,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:48:32,716 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 10 states. [2020-10-12 15:48:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:32,955 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-12 15:48:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:48:32,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-12 15:48:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:32,956 INFO L225 Difference]: With dead ends: 69 [2020-10-12 15:48:32,956 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 15:48:32,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:48:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 15:48:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2020-10-12 15:48:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 15:48:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-12 15:48:32,961 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 28 [2020-10-12 15:48:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:32,962 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-12 15:48:32,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:48:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-12 15:48:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:48:32,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:32,963 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:32,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:48:32,963 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:32,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1474620245, now seen corresponding path program 2 times [2020-10-12 15:48:32,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:32,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220962555] [2020-10-12 15:48:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:48:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 15:48:33,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:48:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:48:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:48:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:33,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:33,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:33,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:33,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:33,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:33,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:33,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220962555] [2020-10-12 15:48:33,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:33,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:48:33,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539806358] [2020-10-12 15:48:33,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:48:33,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:33,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:48:33,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:48:33,220 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 10 states. [2020-10-12 15:48:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:33,532 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-12 15:48:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:48:33,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-12 15:48:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:33,534 INFO L225 Difference]: With dead ends: 62 [2020-10-12 15:48:33,534 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 15:48:33,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:48:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 15:48:33,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-10-12 15:48:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 15:48:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-12 15:48:33,539 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2020-10-12 15:48:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:33,539 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-12 15:48:33,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:48:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-12 15:48:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:48:33,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:33,540 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:33,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:48:33,541 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:33,541 INFO L82 PathProgramCache]: Analyzing trace with hash -149429434, now seen corresponding path program 2 times [2020-10-12 15:48:33,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:33,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467579422] [2020-10-12 15:48:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:33,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:33,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:48:33,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:33,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 15:48:33,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:33,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:48:33,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:48:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:48:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:33,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:33,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:33,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:33,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:33,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:33,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467579422] [2020-10-12 15:48:33,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:33,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:48:33,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024711702] [2020-10-12 15:48:33,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:48:33,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:48:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:48:33,964 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 11 states. [2020-10-12 15:48:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:34,233 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-12 15:48:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:48:34,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-12 15:48:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:34,235 INFO L225 Difference]: With dead ends: 60 [2020-10-12 15:48:34,235 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 15:48:34,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:48:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 15:48:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-12 15:48:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 15:48:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-12 15:48:34,240 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 28 [2020-10-12 15:48:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:34,240 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-12 15:48:34,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:48:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-12 15:48:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:48:34,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:34,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:48:34,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:48:34,242 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:34,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:34,242 INFO L82 PathProgramCache]: Analyzing trace with hash 150272518, now seen corresponding path program 1 times [2020-10-12 15:48:34,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:34,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016735873] [2020-10-12 15:48:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:34,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:34,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:48:34,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:34,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 15:48:34,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:34,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:48:34,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:48:34,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:48:34,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:34,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:34,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:34,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:34,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:34,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016735873] [2020-10-12 15:48:34,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:34,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:48:34,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18124566] [2020-10-12 15:48:34,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:48:34,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:34,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:48:34,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:48:34,651 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 11 states. [2020-10-12 15:48:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:34,873 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-12 15:48:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:48:34,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-12 15:48:34,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:34,874 INFO L225 Difference]: With dead ends: 54 [2020-10-12 15:48:34,874 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 15:48:34,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:48:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 15:48:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-12 15:48:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 15:48:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-12 15:48:34,879 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 28 [2020-10-12 15:48:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:34,879 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-12 15:48:34,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:48:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-12 15:48:34,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:48:34,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:34,880 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:34,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:48:34,881 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:34,881 INFO L82 PathProgramCache]: Analyzing trace with hash -794385695, now seen corresponding path program 3 times [2020-10-12 15:48:34,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:34,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707519037] [2020-10-12 15:48:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:35,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:35,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:48:35,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:35,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 15:48:35,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:48:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:48:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:48:35,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:35,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:35,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:35,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:48:35,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:35,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707519037] [2020-10-12 15:48:35,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:35,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:48:35,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061314141] [2020-10-12 15:48:35,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:48:35,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:35,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:48:35,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:48:35,377 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 12 states. [2020-10-12 15:48:35,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:35,791 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-10-12 15:48:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:48:35,792 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-12 15:48:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:35,792 INFO L225 Difference]: With dead ends: 86 [2020-10-12 15:48:35,793 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 15:48:35,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:48:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 15:48:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2020-10-12 15:48:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 15:48:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-10-12 15:48:35,805 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 30 [2020-10-12 15:48:35,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:35,808 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-10-12 15:48:35,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:48:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-10-12 15:48:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:48:35,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:35,809 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:48:35,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:48:35,810 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:35,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1568321631, now seen corresponding path program 1 times [2020-10-12 15:48:35,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:35,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128969936] [2020-10-12 15:48:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:48:35,829 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:48:35,829 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:48:35,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:48:35,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:48:35 BoogieIcfgContainer [2020-10-12 15:48:35,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:48:35,883 INFO L168 Benchmark]: Toolchain (without parser) took 11584.70 ms. Allocated memory was 147.8 MB in the beginning and 364.4 MB in the end (delta: 216.5 MB). Free memory was 103.6 MB in the beginning and 257.5 MB in the end (delta: -153.8 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:35,884 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:48:35,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.16 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 170.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:35,885 INFO L168 Benchmark]: Boogie Preprocessor took 64.59 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 167.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:35,892 INFO L168 Benchmark]: RCFGBuilder took 558.11 ms. Allocated memory is still 203.9 MB. Free memory was 167.6 MB in the beginning and 122.6 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:35,895 INFO L168 Benchmark]: TraceAbstraction took 10314.51 ms. Allocated memory was 203.9 MB in the beginning and 364.4 MB in the end (delta: 160.4 MB). Free memory was 122.6 MB in the beginning and 257.5 MB in the end (delta: -134.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:35,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.16 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 170.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.59 ms. Allocated memory is still 203.9 MB. Free memory was 170.8 MB in the beginning and 167.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 558.11 ms. Allocated memory is still 203.9 MB. Free memory was 167.6 MB in the beginning and 122.6 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10314.51 ms. Allocated memory was 203.9 MB in the beginning and 364.4 MB in the end (delta: 160.4 MB). Free memory was 122.6 MB in the beginning and 257.5 MB in the end (delta: -134.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] COND TRUE __VERIFIER_nondet_int() [L526] p->h = 1 [L527] t = (List) malloc(sizeof(struct node)) [L528] COND FALSE !(t == 0) [L529] p->n = t [L530] EXPR p->n [L530] p = p->n [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND TRUE __VERIFIER_nondet_int() [L533] p->h = 2 [L534] t = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(t == 0) [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] EXPR p->h [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h [L543] COND TRUE p->h == 1 [L544] EXPR p->n [L544] p = p->n [L543] EXPR p->h [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.2s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 254 SDtfs, 506 SDslu, 1206 SDs, 0 SdLazy, 2021 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 165 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 317 ConstructedInterpolants, 0 QuantifiedInterpolants, 76418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 10/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...