/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:26:03,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:26:03,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:26:03,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:26:03,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:26:03,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:26:03,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:26:03,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:26:03,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:26:03,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:26:03,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:26:03,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:26:03,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:26:03,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:26:03,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:26:03,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:26:03,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:26:03,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:26:03,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:26:03,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:26:03,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:26:03,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:26:03,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:26:03,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:26:03,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:26:03,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:26:03,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:26:03,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:26:03,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:26:03,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:26:03,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:26:03,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:26:03,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:26:03,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:26:03,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:26:03,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:26:03,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:26:03,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:26:03,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:26:03,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:26:03,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:26:03,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:26:03,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:26:03,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:26:03,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:26:03,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:26:03,544 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:26:03,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:26:03,545 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:26:03,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:26:03,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:26:03,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:26:03,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:26:03,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:26:03,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:26:03,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:26:03,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:26:03,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:26:03,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:26:03,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:26:03,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:26:03,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:26:03,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:26:03,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:26:03,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:26:03,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:26:03,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:26:03,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:26:03,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:26:03,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:26:03,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:26:03,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:26:03,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:26:03,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:26:03,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:26:03,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:26:03,997 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:26:03,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2020-10-29 09:26:04,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47c6094dd/aecdaeecd4df45c6a956a612bfd4f776/FLAGdb60711a8 [2020-10-29 09:26:04,814 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:26:04,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2020-10-29 09:26:04,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47c6094dd/aecdaeecd4df45c6a956a612bfd4f776/FLAGdb60711a8 [2020-10-29 09:26:05,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47c6094dd/aecdaeecd4df45c6a956a612bfd4f776 [2020-10-29 09:26:05,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:26:05,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:26:05,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:26:05,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:26:05,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:26:05,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767f667c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05, skipping insertion in model container [2020-10-29 09:26:05,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:26:05,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:26:05,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:26:05,742 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:26:05,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:26:05,873 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:26:05,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05 WrapperNode [2020-10-29 09:26:05,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:26:05,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:26:05,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:26:05,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:26:05,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... [2020-10-29 09:26:05,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:26:05,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:26:05,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:26:05,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:26:05,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:26:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:26:06,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:26:06,051 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:26:06,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:26:06,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:26:06,051 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:26:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:26:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-29 09:26:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_remove_last [2020-10-29 09:26:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:26:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:26:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:26:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:26:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:26:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:26:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:26:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:26:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:26:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:26:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:26:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:26:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:26:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:26:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:26:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:26:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:26:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:26:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:26:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:26:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:26:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:26:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:26:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:26:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:26:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:26:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:26:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:26:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:26:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:26:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:26:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:26:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:26:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:26:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:26:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:26:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:26:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:26:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:26:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:26:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:26:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:26:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:26:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:26:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:26:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:26:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:26:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:26:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:26:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:26:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:26:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:26:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:26:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:26:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:26:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:26:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:26:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:26:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:26:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:26:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:26:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:26:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:26:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:26:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:26:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:26:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:26:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:26:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:26:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:26:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:26:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:26:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:26:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:26:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:26:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:26:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:26:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:26:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:26:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:26:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:26:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:26:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:26:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:26:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:26:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:26:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:26:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:26:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:26:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:26:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:26:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:26:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:26:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:26:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:26:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:26:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:26:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:26:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:26:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:26:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:26:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:26:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:26:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:26:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:26:06,067 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:26:06,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:26:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:26:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:26:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-29 09:26:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_remove_last [2020-10-29 09:26:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:26:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:26:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:26:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:26:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:26:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:26:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:26:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:26:06,945 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:26:07,075 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:26:07,076 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:26:07,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:26:07 BoogieIcfgContainer [2020-10-29 09:26:07,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:26:07,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:26:07,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:26:07,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:26:07,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:26:05" (1/3) ... [2020-10-29 09:26:07,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46569856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:26:07, skipping insertion in model container [2020-10-29 09:26:07,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:26:05" (2/3) ... [2020-10-29 09:26:07,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46569856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:26:07, skipping insertion in model container [2020-10-29 09:26:07,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:26:07" (3/3) ... [2020-10-29 09:26:07,087 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2020-10-29 09:26:07,099 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:26:07,104 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:26:07,117 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:26:07,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:26:07,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:26:07,145 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:26:07,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:26:07,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:26:07,146 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:26:07,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:26:07,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:26:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-29 09:26:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 09:26:07,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:07,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:07,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:07,178 INFO L82 PathProgramCache]: Analyzing trace with hash 379255624, now seen corresponding path program 1 times [2020-10-29 09:26:07,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:07,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419434339] [2020-10-29 09:26:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:07,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:07,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 09:26:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-29 09:26:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:07,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:26:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:26:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:08,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:08,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:08,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:08,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:08,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:26:08,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:08,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:08,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:08,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:26:08,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 09:26:08,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:08,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:26:08,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:26:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:08,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:08,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:08,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:08,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:08,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:26:08,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:08,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:26:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:26:08,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419434339] [2020-10-29 09:26:08,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:26:08,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:26:08,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575682371] [2020-10-29 09:26:08,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:26:08,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:08,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:26:08,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:26:08,340 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-10-29 09:26:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:08,707 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-10-29 09:26:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:26:08,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-29 09:26:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:08,718 INFO L225 Difference]: With dead ends: 76 [2020-10-29 09:26:08,718 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:26:08,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:26:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:26:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2020-10-29 09:26:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:26:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-29 09:26:08,771 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 26 [2020-10-29 09:26:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:08,772 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-29 09:26:08,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:26:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-29 09:26:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:26:08,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:08,775 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] [2020-10-29 09:26:08,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:26:08,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:08,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2007713411, now seen corresponding path program 1 times [2020-10-29 09:26:08,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:08,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415578466] [2020-10-29 09:26:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:26:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-29 09:26:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:09,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:26:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:26:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:26:09,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:26:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:09,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:09,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:09,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 09:26:09,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:09,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:09,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:09,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:09,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:09,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:26:09,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:09,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:09,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:09,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:09,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:09,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:26:09,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:09,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:26:09,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415578466] [2020-10-29 09:26:09,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:26:09,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:26:09,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021650658] [2020-10-29 09:26:09,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:26:09,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:09,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:26:09,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:26:09,639 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2020-10-29 09:26:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:09,837 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-29 09:26:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:26:09,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-29 09:26:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:09,839 INFO L225 Difference]: With dead ends: 47 [2020-10-29 09:26:09,839 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 09:26:09,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:26:09,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 09:26:09,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-29 09:26:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 09:26:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 09:26:09,851 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 36 [2020-10-29 09:26:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:09,852 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 09:26:09,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:26:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 09:26:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:26:09,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:09,854 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, 1, 1] [2020-10-29 09:26:09,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:26:09,854 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:09,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1015437847, now seen corresponding path program 1 times [2020-10-29 09:26:09,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:09,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961276453] [2020-10-29 09:26:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:14,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:14,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:26:14,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:26:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:26:14,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:14,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:26:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:14,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:14,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:26:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:14,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:26:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:15,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:15,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 09:26:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:15,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:26:15,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:15,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:15,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:15,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:15,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:26:15,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:15,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:15,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:15,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:15,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:15,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:26:15,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:15,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:15,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 09:26:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:15,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:26:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:26:15,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:15,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:26:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:26:15,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961276453] [2020-10-29 09:26:15,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:26:15,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:26:15,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428005736] [2020-10-29 09:26:15,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:26:15,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:15,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:26:15,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:26:15,246 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 8 states. [2020-10-29 09:26:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:15,453 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-29 09:26:15,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:26:15,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-29 09:26:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:15,455 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:26:15,456 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:26:15,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:26:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:26:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 09:26:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:26:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-29 09:26:15,466 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 43 [2020-10-29 09:26:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:15,466 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-29 09:26:15,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:26:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-29 09:26:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:26:15,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:15,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:15,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:26:15,469 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash 533583875, now seen corresponding path program 2 times [2020-10-29 09:26:15,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:15,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242682752] [2020-10-29 09:26:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:16,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:16,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:20,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:20,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:26:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:26:20,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 09:26:20,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:20,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:26:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 09:26:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:26:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:20,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:20,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:20,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:26:20,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:20,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:21,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-29 09:26:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:26:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:26:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:26:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:21,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:26:21,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:26:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:21,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:26:21,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:26:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:26:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 09:26:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:26:21,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:26:21,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:26:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:26:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 09:26:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:26:21,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:26:21,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 09:26:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:26:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:26:21,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242682752] [2020-10-29 09:26:21,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:26:21,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:26:21,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15594727] [2020-10-29 09:26:21,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:26:21,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:21,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:26:21,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:26:21,556 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 19 states. [2020-10-29 09:26:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:22,505 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-29 09:26:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:26:22,506 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-29 09:26:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:22,511 INFO L225 Difference]: With dead ends: 74 [2020-10-29 09:26:22,511 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 09:26:22,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:26:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 09:26:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-29 09:26:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:26:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-29 09:26:22,529 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 50 [2020-10-29 09:26:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:22,529 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-29 09:26:22,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:26:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-29 09:26:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:26:22,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:22,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:22,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:26:22,532 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:22,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1054764027, now seen corresponding path program 1 times [2020-10-29 09:26:22,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:22,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621139166] [2020-10-29 09:26:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:26:22,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-29 09:26:22,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:26:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 09:26:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:22,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:23,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:23,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:23,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:23,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:26:23,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:23,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:23,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:23,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:26:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:23,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:23,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:23,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:23,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:23,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:26:23,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:23,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:23,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:23,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 09:26:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:26:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:23,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:23,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:23,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 09:26:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:23,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:26:23,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:23,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:26:23,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:23,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:23,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:26:23,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:23,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:26:23,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621139166] [2020-10-29 09:26:23,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:26:23,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:26:23,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338063596] [2020-10-29 09:26:23,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:26:23,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:23,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:26:23,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:26:23,212 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 9 states. [2020-10-29 09:26:23,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:23,641 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2020-10-29 09:26:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:26:23,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-29 09:26:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:23,645 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:26:23,645 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 09:26:23,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:26:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 09:26:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-10-29 09:26:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:26:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-29 09:26:23,666 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 50 [2020-10-29 09:26:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:23,667 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-29 09:26:23,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:26:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-29 09:26:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:26:23,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:23,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:23,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:26:23,671 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:23,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:23,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1447791037, now seen corresponding path program 1 times [2020-10-29 09:26:23,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:23,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106266600] [2020-10-29 09:26:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:26:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1687 [2020-10-29 09:26:25,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:25,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:26:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 09:26:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:26:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:25,528 ERROR L253 erpolLogProxyWrapper]: Interpolant 16 not inductive [2020-10-29 09:26:25,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:26:25,529 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:851) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-29 09:26:25,539 INFO L168 Benchmark]: Toolchain (without parser) took 20427.62 ms. Allocated memory was 151.0 MB in the beginning and 463.5 MB in the end (delta: 312.5 MB). Free memory was 125.3 MB in the beginning and 283.5 MB in the end (delta: -158.2 MB). Peak memory consumption was 274.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:26:25,541 INFO L168 Benchmark]: CDTParser took 1.60 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.6 MB in the end (delta: 83.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:26:25,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.84 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:26:25,550 INFO L168 Benchmark]: Boogie Preprocessor took 90.11 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 133.7 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:26:25,551 INFO L168 Benchmark]: RCFGBuilder took 1111.69 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 89.2 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:26:25,552 INFO L168 Benchmark]: TraceAbstraction took 18455.17 ms. Allocated memory was 151.0 MB in the beginning and 463.5 MB in the end (delta: 312.5 MB). Free memory was 88.7 MB in the beginning and 283.5 MB in the end (delta: -194.9 MB). Peak memory consumption was 237.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:26:25,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.60 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.6 MB in the end (delta: 83.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 756.84 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.11 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 133.7 MB in the end (delta: -31.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1111.69 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 89.2 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18455.17 ms. Allocated memory was 151.0 MB in the beginning and 463.5 MB in the end (delta: 312.5 MB). Free memory was 88.7 MB in the beginning and 283.5 MB in the end (delta: -194.9 MB). Peak memory consumption was 237.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...