/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-simple/dll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:49:23,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:49:23,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:49:23,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:49:23,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:49:23,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:49:23,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:49:23,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:49:23,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:49:23,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:49:23,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:49:23,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:49:23,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:49:23,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:49:23,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:49:23,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:49:23,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:49:23,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:49:23,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:49:23,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:49:23,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:49:23,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:49:23,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:49:23,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:49:23,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:49:23,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:49:23,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:49:23,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:49:23,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:49:23,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:49:23,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:49:23,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:49:23,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:49:23,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:49:23,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:49:23,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:49:23,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:49:23,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:49:23,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:49:23,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:49:23,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:49:23,999 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 15:49:24,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:49:24,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:49:24,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:49:24,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:49:24,025 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:49:24,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:49:24,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:49:24,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:49:24,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:49:24,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:49:24,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:49:24,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:49:24,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:49:24,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:49:24,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:49:24,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:49:24,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:49:24,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:49:24,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:49:24,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:49:24,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:49:24,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:49:24,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:49:24,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:49:24,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:49:24,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:49:24,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:49:24,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:49:24,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:49:24,030 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 15:49:24,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:49:24,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:49:24,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:49:24,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:49:24,335 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:49:24,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2020-10-12 15:49:24,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f7630f4/af1fdc21768e4957af041b91a926ee01/FLAG6768d184d [2020-10-12 15:49:24,860 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:49:24,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2020-10-12 15:49:24,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f7630f4/af1fdc21768e4957af041b91a926ee01/FLAG6768d184d [2020-10-12 15:49:25,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66f7630f4/af1fdc21768e4957af041b91a926ee01 [2020-10-12 15:49:25,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:49:25,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:49:25,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:49:25,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:49:25,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:49:25,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd2fa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25, skipping insertion in model container [2020-10-12 15:49:25,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:49:25,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:49:25,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:49:25,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:49:25,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:49:25,884 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:49:25,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25 WrapperNode [2020-10-12 15:49:25,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:49:25,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:49:25,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:49:25,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:49:25,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (1/1) ... [2020-10-12 15:49:25,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:49:25,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:49:25,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:49:25,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:49:25,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (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 15:49:26,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:49:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:49:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:49:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:49:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:49:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-12 15:49:26,049 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-12 15:49:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-12 15:49:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2020-10-12 15:49:26,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:49:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:49:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:49:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:49:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:49:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:49:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:49:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:49:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:49:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:49:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:49:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:49:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:49:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:49:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:49:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:49:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:49:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:49:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:49:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:49:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:49:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:49:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:49:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:49:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:49:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:49:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:49:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:49:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:49:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:49:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:49:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:49:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:49:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:49:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:49:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:49:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:49:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:49:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:49:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:49:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:49:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:49:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:49:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:49:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:49:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:49:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:49:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:49:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:49:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:49:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:49:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:49:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:49:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:49:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:49:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:49:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:49:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:49:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:49:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:49:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:49:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:49:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:49:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:49:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:49:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:49:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:49:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:49:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:49:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:49:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:49:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:49:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:49:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:49:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:49:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:49:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:49:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:49:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:49:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:49:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:49:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:49:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:49:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:49:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:49:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:49:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:49:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:49:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:49:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:49:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:49:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:49:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:49:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:49:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:49:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:49:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:49:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:49:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:49:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:49:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:49:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:49:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:49:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:49:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:49:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:49:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:49:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:49:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-12 15:49:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:49:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:49:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:49:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-12 15:49:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-12 15:49:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:49:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:49:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2020-10-12 15:49:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:49:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:49:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:49:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:49:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:49:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:49:26,496 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:49:26,675 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:49:26,676 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 15:49:26,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:49:26 BoogieIcfgContainer [2020-10-12 15:49:26,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:49:26,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:49:26,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:49:26,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:49:26,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:49:25" (1/3) ... [2020-10-12 15:49:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0f3e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:49:26, skipping insertion in model container [2020-10-12 15:49:26,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:49:25" (2/3) ... [2020-10-12 15:49:26,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0f3e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:49:26, skipping insertion in model container [2020-10-12 15:49:26,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:49:26" (3/3) ... [2020-10-12 15:49:26,701 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_append_unequal.i [2020-10-12 15:49:26,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:49:26,722 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:49:26,737 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:49:26,764 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:49:26,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:49:26,765 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:49:26,765 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:49:26,765 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:49:26,765 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:49:26,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:49:26,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:49:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-12 15:49:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:49:26,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:49:26,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:49:26,802 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:49:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:49:26,810 INFO L82 PathProgramCache]: Analyzing trace with hash 656525943, now seen corresponding path program 1 times [2020-10-12 15:49:26,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:49:26,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853577516] [2020-10-12 15:49:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:49:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:28,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:28,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:49:28,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:49:28,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1927 [2020-10-12 15:49:28,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:49:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:49:28,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:49:28,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:49:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:49:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:29,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:49:29,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:49:29,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:49:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:49:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:49:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:29,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:29,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:29,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:49:29,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:49:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-12 15:49:29,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:49:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:49:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:49:29,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:49:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:29,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:49:29,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:49:29,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:49:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:49:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:49:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:29,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:29,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:49:29,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:29,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 15:49:29,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:49:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:49:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:49:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:29,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:49:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:29,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:29,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:49:29,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:49:29,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:49:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:49:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:49:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:49:30,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853577516] [2020-10-12 15:49:30,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:49:30,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:49:30,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314061446] [2020-10-12 15:49:30,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:49:30,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:49:30,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:49:30,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:49:30,158 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 18 states. [2020-10-12 15:49:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:49:31,664 INFO L93 Difference]: Finished difference Result 115 states and 151 transitions. [2020-10-12 15:49:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:49:31,666 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-10-12 15:49:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:49:31,683 INFO L225 Difference]: With dead ends: 115 [2020-10-12 15:49:31,683 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 15:49:31,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:49:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 15:49:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-12 15:49:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 15:49:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-12 15:49:31,739 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 36 [2020-10-12 15:49:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:49:31,739 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-12 15:49:31,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:49:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-12 15:49:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:49:31,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:49:31,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:49:31,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:49:31,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:49:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:49:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash -316028564, now seen corresponding path program 1 times [2020-10-12 15:49:31,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:49:31,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583008853] [2020-10-12 15:49:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:49:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:33,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:33,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:49:33,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:49:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2179 [2020-10-12 15:49:33,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 15:49:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:49:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:49:33,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:49:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:34,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:49:34,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:49:34,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:49:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:34,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:49:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:49:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:34,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:34,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:49:34,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:34,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 15:49:34,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:49:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:49:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:34,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:49:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:34,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:34,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:49:34,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:34,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:49:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:49:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:49:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:49:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:35,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:35,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:49:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-12 15:49:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:49:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:49:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:49:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:49:36,163 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-10-12 15:49:36,798 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-10-12 15:49:37,304 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-12 15:49:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:49:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:37,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:49:37,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 15:49:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:49:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:49:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:49:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:38,076 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-10-12 15:49:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:49:38,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583008853] [2020-10-12 15:49:38,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:49:38,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:49:38,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90115857] [2020-10-12 15:49:38,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:49:38,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:49:38,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:49:38,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:49:38,103 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 22 states. [2020-10-12 15:49:38,472 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 15:49:39,133 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 15:49:39,431 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 15:49:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:49:41,015 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-12 15:49:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:49:41,017 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2020-10-12 15:49:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:49:41,019 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:49:41,019 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:49:41,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 15:49:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:49:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-12 15:49:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:49:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-12 15:49:41,033 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 36 [2020-10-12 15:49:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:49:41,034 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-12 15:49:41,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:49:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-12 15:49:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:49:41,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:49:41,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:49:41,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:49:41,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:49:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:49:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1231108546, now seen corresponding path program 1 times [2020-10-12 15:49:41,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:49:41,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807611911] [2020-10-12 15:49:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:49:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:46,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:46,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:49:46,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:49:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 15:49:46,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:49:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:49:46,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:49:46,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:49:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:46,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:49:46,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:49:46,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:49:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:49:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:49:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:46,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:46,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:49:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 15:49:46,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:49:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:49:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:47,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:49:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:47,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:47,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:49:47,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:47,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:49:47,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:49:47,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:49:47,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:49:47,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:49:47,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:49:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:49:47,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:49:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:49:47,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:49:47,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:49:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-12 15:49:47,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:49:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:49:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:49:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:49:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:49:49,527 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2020-10-12 15:50:07,530 WARN L193 SmtUtils]: Spent 16.33 s on a formula simplification. DAG size of input: 744 DAG size of output: 167 [2020-10-12 15:50:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:09,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:09,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:09,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:50:09,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:50:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:10,422 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2020-10-12 15:50:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:50:10,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807611911] [2020-10-12 15:50:10,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:10,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 15:50:10,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784528770] [2020-10-12 15:50:10,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 15:50:10,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:10,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 15:50:10,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:50:10,453 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 24 states. [2020-10-12 15:50:11,320 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 15:50:12,537 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-12 15:50:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:14,934 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2020-10-12 15:50:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:50:14,936 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 40 [2020-10-12 15:50:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:14,937 INFO L225 Difference]: With dead ends: 75 [2020-10-12 15:50:14,938 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 15:50:14,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=148, Invalid=1412, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 15:50:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 15:50:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2020-10-12 15:50:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 15:50:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-12 15:50:14,954 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 40 [2020-10-12 15:50:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:14,954 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-12 15:50:14,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 15:50:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-12 15:50:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:50:14,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:14,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:14,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:50:14,956 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:14,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:14,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1231064836, now seen corresponding path program 1 times [2020-10-12 15:50:14,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:14,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888423364] [2020-10-12 15:50:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:50:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:50:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 15:50:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 15:50:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:50:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:20,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:20,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:20,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:20,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:20,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:20,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:20,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:50:20,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:50:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:20,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:50:20,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:20,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:20,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:50:20,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:20,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:20,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:20,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:21,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:21,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:21,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-12 15:50:21,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:50:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:22,890 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2020-10-12 15:50:23,336 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2020-10-12 15:50:27,324 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 260 DAG size of output: 136 [2020-10-12 15:50:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:28,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:28,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 15:50:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:50:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:50:28,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888423364] [2020-10-12 15:50:28,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:28,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:50:28,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498567906] [2020-10-12 15:50:28,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:50:28,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:28,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:50:28,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:50:28,621 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 22 states. [2020-10-12 15:50:29,300 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 15:50:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:31,628 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-10-12 15:50:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:50:31,629 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-12 15:50:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:31,631 INFO L225 Difference]: With dead ends: 72 [2020-10-12 15:50:31,631 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 15:50:31,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:50:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 15:50:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-10-12 15:50:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 15:50:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-10-12 15:50:31,644 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 40 [2020-10-12 15:50:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:31,644 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-10-12 15:50:31,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:50:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-10-12 15:50:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:50:31,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:31,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:31,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:50:31,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash -491693899, now seen corresponding path program 1 times [2020-10-12 15:50:31,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:31,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35102933] [2020-10-12 15:50:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:31,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 15:50:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 15:50:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:50:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:50:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:31,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:50:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:31,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:31,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:31,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:50:31,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:50:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:50:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:31,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:31,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:31,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:31,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:50:31,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:50:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:50:31,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:32,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:32,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:32,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:50:32,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:50:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:32,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:32,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:32,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:50:32,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:32,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:50:32,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35102933] [2020-10-12 15:50:32,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:50:32,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:50:32,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271221572] [2020-10-12 15:50:32,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:50:32,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:32,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:50:32,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:50:32,063 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 7 states. [2020-10-12 15:50:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:32,361 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2020-10-12 15:50:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:50:32,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-12 15:50:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:32,365 INFO L225 Difference]: With dead ends: 82 [2020-10-12 15:50:32,365 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 15:50:32,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:50:32,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 15:50:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-12 15:50:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 15:50:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-12 15:50:32,379 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 41 [2020-10-12 15:50:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:32,379 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-12 15:50:32,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:50:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-12 15:50:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:50:32,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:32,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:32,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:50:32,390 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:32,390 INFO L82 PathProgramCache]: Analyzing trace with hash 364861950, now seen corresponding path program 1 times [2020-10-12 15:50:32,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:32,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782359085] [2020-10-12 15:50:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:50:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-12 15:50:33,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:50:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:50:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:33,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:33,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:33,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:33,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:33,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:33,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:33,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:50:33,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:33,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-12 15:50:33,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:33,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:50:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:50:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:34,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:34,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:34,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:34,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:50:34,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:34,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:50:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:34,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:34,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:34,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:50:34,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:34,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:50:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:34,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:34,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:50:34,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:34,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:34,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:34,189 ERROR L253 erpolLogProxyWrapper]: Interpolant 5 not inductive [2020-10-12 15:50:34,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:50:34,191 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-12 15:50:34,194 INFO L168 Benchmark]: Toolchain (without parser) took 69048.67 ms. Allocated memory was 139.5 MB in the beginning and 882.9 MB in the end (delta: 743.4 MB). Free memory was 101.0 MB in the beginning and 676.2 MB in the end (delta: -575.2 MB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:50:34,195 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-12 15:50:34,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.34 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 167.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:50:34,198 INFO L168 Benchmark]: Boogie Preprocessor took 94.97 ms. Allocated memory is still 202.9 MB. Free memory was 167.9 MB in the beginning and 164.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:50:34,198 INFO L168 Benchmark]: RCFGBuilder took 703.16 ms. Allocated memory is still 202.9 MB. Free memory was 164.5 MB in the beginning and 111.3 MB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:50:34,199 INFO L168 Benchmark]: TraceAbstraction took 67506.06 ms. Allocated memory was 202.9 MB in the beginning and 882.9 MB in the end (delta: 680.0 MB). Free memory was 111.3 MB in the beginning and 676.2 MB in the end (delta: -564.9 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:50:34,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.34 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 167.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.97 ms. Allocated memory is still 202.9 MB. Free memory was 167.9 MB in the beginning and 164.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 703.16 ms. Allocated memory is still 202.9 MB. Free memory was 164.5 MB in the beginning and 111.3 MB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 67506.06 ms. Allocated memory was 202.9 MB in the beginning and 882.9 MB in the end (delta: 680.0 MB). Free memory was 111.3 MB in the beginning and 676.2 MB in the end (delta: -564.9 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...