/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=DEEPEST --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 [2020-10-27 20:02:57,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:02:57,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:02:57,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:02:57,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:02:57,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:02:57,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:02:57,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:02:57,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:02:57,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:02:57,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:02:57,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:02:57,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:02:57,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:02:57,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:02:57,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:02:57,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:02:57,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:02:57,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:02:57,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:02:57,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:02:57,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:02:57,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:02:57,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:02:57,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:02:57,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:02:57,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:02:57,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:02:57,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:02:57,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:02:57,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:02:57,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:02:57,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:02:57,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:02:57,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:02:57,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:02:57,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:02:57,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:02:57,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:02:57,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:02:57,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:02:57,473 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 [2020-10-27 20:02:57,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:02:57,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:02:57,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:02:57,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:02:57,514 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:02:57,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:02:57,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:02:57,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:02:57,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:02:57,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:02:57,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:02:57,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:02:57,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:02:57,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:02:57,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:02:57,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:02:57,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:02:57,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:02:57,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:02:57,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:02:57,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:02:57,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:02:57,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:02:57,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:02:57,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:02:57,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:02:57,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:02:57,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:02:57,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:02:57,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:02:57,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:02:57,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:02:57,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:02:57,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:02:57,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:02:57,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2020-10-27 20:02:58,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40792eafa/949a2db4632f487db1f3ee73082e46ed/FLAG8828ab696 [2020-10-27 20:02:58,738 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:02:58,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2020-10-27 20:02:58,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40792eafa/949a2db4632f487db1f3ee73082e46ed/FLAG8828ab696 [2020-10-27 20:02:59,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40792eafa/949a2db4632f487db1f3ee73082e46ed [2020-10-27 20:02:59,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:02:59,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:02:59,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:02:59,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:02:59,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:02:59,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4854903f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59, skipping insertion in model container [2020-10-27 20:02:59,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:02:59,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:02:59,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:02:59,507 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:02:59,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:02:59,620 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:02:59,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59 WrapperNode [2020-10-27 20:02:59,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:02:59,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:02:59,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:02:59,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:02:59,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (1/1) ... [2020-10-27 20:02:59,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:02:59,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:02:59,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:02:59,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:02:59,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (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 [2020-10-27 20:02:59,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:02:59,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:02:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:02:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 20:02:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 20:02:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 20:02:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 20:02:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-27 20:02:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_remove_last [2020-10-27 20:02:59,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:02:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:02:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:02:59,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:02:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:02:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:02:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:02:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 20:02:59,827 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 20:02:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 20:02:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 20:02:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 20:02:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 20:02:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 20:02:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 20:02:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 20:02:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 20:02:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 20:02:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 20:02:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 20:02:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 20:02:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 20:02:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 20:02:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 20:02:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 20:02:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 20:02:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 20:02:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 20:02:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 20:02:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 20:02:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 20:02:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 20:02:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 20:02:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 20:02:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 20:02:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 20:02:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 20:02:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 20:02:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 20:02:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 20:02:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 20:02:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 20:02:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 20:02:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 20:02:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 20:02:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 20:02:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 20:02:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 20:02:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 20:02:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 20:02:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 20:02:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 20:02:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 20:02:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 20:02:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 20:02:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 20:02:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 20:02:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 20:02:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 20:02:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 20:02:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 20:02:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 20:02:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 20:02:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 20:02:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 20:02:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 20:02:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 20:02:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 20:02:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 20:02:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 20:02:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 20:02:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 20:02:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 20:02:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 20:02:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 20:02:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 20:02:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 20:02:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 20:02:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 20:02:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 20:02:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 20:02:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 20:02:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 20:02:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 20:02:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 20:02:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 20:02:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 20:02:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 20:02:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 20:02:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 20:02:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 20:02:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 20:02:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 20:02:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 20:02:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 20:02:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 20:02:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 20:02:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 20:02:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 20:02:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 20:02:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 20:02:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 20:02:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 20:02:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 20:02:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 20:02:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 20:02:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 20:02:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 20:02:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 20:02:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 20:02:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 20:02:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 20:02:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 20:02:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 20:02:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 20:02:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:02:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-27 20:02:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_remove_last [2020-10-27 20:02:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 20:02:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:02:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:02:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 20:02:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:02:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:02:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:02:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:03:00,329 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 20:03:00,527 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:03:00,528 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 20:03:00,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:03:00 BoogieIcfgContainer [2020-10-27 20:03:00,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:03:00,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:03:00,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:03:00,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:03:00,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:02:59" (1/3) ... [2020-10-27 20:03:00,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275a7322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:03:00, skipping insertion in model container [2020-10-27 20:03:00,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:59" (2/3) ... [2020-10-27 20:03:00,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275a7322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:03:00, skipping insertion in model container [2020-10-27 20:03:00,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:03:00" (3/3) ... [2020-10-27 20:03:00,538 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2020-10-27 20:03:00,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:03:00,556 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:03:00,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:03:00,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:03:00,590 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:03:00,590 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:03:00,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:03:00,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:03:00,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:03:00,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:03:00,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:03:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-27 20:03:00,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:03:00,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:03:00,617 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] [2020-10-27 20:03:00,618 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:03:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:03:00,624 INFO L82 PathProgramCache]: Analyzing trace with hash 379255624, now seen corresponding path program 1 times [2020-10-27 20:03:00,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:03:00,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415489821] [2020-10-27 20:03:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:03:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:01,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:03:01,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:03:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-27 20:03:01,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 20:03:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:01,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:03:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:03:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:03:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:03:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:03:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:01,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:01,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:01,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:03:01,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 20:03:01,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:03:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:01,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:03:01,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:03:01,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415489821] [2020-10-27 20:03:01,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:03:01,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:03:01,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919038130] [2020-10-27 20:03:01,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:03:01,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:03:01,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:03:01,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:03:01,661 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-27 20:03:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:03:01,887 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-27 20:03:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:03:01,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 20:03:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:03:01,898 INFO L225 Difference]: With dead ends: 68 [2020-10-27 20:03:01,899 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 20:03:01,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:03:01,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 20:03:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-27 20:03:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 20:03:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 20:03:01,953 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 26 [2020-10-27 20:03:01,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:03:01,955 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 20:03:01,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:03:01,955 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 20:03:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:03:01,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:03:01,957 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] [2020-10-27 20:03:01,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:03:01,958 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:03:01,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:03:01,959 INFO L82 PathProgramCache]: Analyzing trace with hash 178851567, now seen corresponding path program 1 times [2020-10-27 20:03:01,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:03:01,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479561660] [2020-10-27 20:03:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:03:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:02,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:02,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:02,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:03:02,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:03:02,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-27 20:03:02,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:03:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:03:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:03:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:03:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:02,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:03:02,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:03:02,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:02,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:03:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:02,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:02,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:03:02,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:03:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 20:03:02,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:03:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:03:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:03:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:03:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:03:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:02,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 20:03:02,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:03:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:03:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:03:02,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479561660] [2020-10-27 20:03:02,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:03:02,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:03:02,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665568528] [2020-10-27 20:03:02,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:03:02,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:03:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:03:02,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:03:02,708 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 8 states. [2020-10-27 20:03:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:03:03,052 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-27 20:03:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:03:03,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-27 20:03:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:03:03,055 INFO L225 Difference]: With dead ends: 62 [2020-10-27 20:03:03,055 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 20:03:03,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:03:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 20:03:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-10-27 20:03:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 20:03:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 20:03:03,081 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-10-27 20:03:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:03:03,082 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 20:03:03,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:03:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 20:03:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 20:03:03,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:03:03,085 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] [2020-10-27 20:03:03,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:03:03,085 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:03:03,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:03:03,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1015437847, now seen corresponding path program 1 times [2020-10-27 20:03:03,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:03:03,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111864305] [2020-10-27 20:03:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:03:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:08,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:08,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 20:03:08,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:03:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 20:03:08,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:03:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:03:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:03:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:08,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:03:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:03:08,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:03:08,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:03:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:08,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:08,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:03:08,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 20:03:08,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:08,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:08,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:03:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:08,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:08,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:08,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:03:08,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:03:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:03:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:03:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:08,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:03:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:03:08,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:03:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:03:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 20:03:08,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111864305] [2020-10-27 20:03:08,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:03:08,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:03:08,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304672918] [2020-10-27 20:03:08,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:03:08,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:03:08,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:03:08,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:03:08,398 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 9 states. [2020-10-27 20:03:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:03:08,809 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-27 20:03:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:03:08,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-27 20:03:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:03:08,813 INFO L225 Difference]: With dead ends: 52 [2020-10-27 20:03:08,814 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 20:03:08,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:03:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 20:03:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-27 20:03:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 20:03:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 20:03:08,824 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 43 [2020-10-27 20:03:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:03:08,824 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 20:03:08,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:03:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 20:03:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 20:03:08,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:03:08,826 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] [2020-10-27 20:03:08,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:03:08,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:03:08,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:03:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash 622410837, now seen corresponding path program 1 times [2020-10-27 20:03:08,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:03:08,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101793992] [2020-10-27 20:03:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:03:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:09,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:09,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 20:03:09,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:03:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-27 20:03:09,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:03:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:03:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 20:03:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:03:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:03:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:03:09,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:03:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:10,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:10,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:03:10,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 20:03:10,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:03:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:10,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:03:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:03:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:10,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:10,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:10,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:10,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:03:10,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:10,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:03:10,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:03:10,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:10,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:03:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:03:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:03:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:03:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:10,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:03:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:10,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:10,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:03:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:03:10,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:03:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:03:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 20:03:10,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101793992] [2020-10-27 20:03:10,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:03:10,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:03:10,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192723943] [2020-10-27 20:03:10,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:03:10,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:03:10,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:03:10,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:03:10,183 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-10-27 20:03:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:03:10,534 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-27 20:03:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:03:10,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 20:03:10,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:03:10,539 INFO L225 Difference]: With dead ends: 58 [2020-10-27 20:03:10,539 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 20:03:10,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:03:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 20:03:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-10-27 20:03:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:03:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-27 20:03:10,561 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 43 [2020-10-27 20:03:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:03:10,563 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-27 20:03:10,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:03:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-27 20:03:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:03:10,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:03:10,569 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] [2020-10-27 20:03:10,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:03:10,570 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:03:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:03:10,570 INFO L82 PathProgramCache]: Analyzing trace with hash 140556865, now seen corresponding path program 1 times [2020-10-27 20:03:10,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:03:10,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494421706] [2020-10-27 20:03:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:03:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:15,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 20:03:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:03:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 20:03:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:03:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:03:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:03:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:03:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:03:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:15,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:15,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:03:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:03:15,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:15,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:03:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:15,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:03:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 20:03:15,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:03:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:15,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:15,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:15,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:03:15,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:15,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 20:03:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:15,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:03:15,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:03:15,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:03:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:03:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:03:15,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:03:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:15,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:15,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:03:15,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:03:15,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:15,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:03:15,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:03:15,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:03:15,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 20:03:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:16,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:16,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:03:16,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:16,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 20:03:16,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:03:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:03:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:03:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:16,195 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-27 20:03:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 20:03:16,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494421706] [2020-10-27 20:03:16,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:03:16,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:03:16,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222522205] [2020-10-27 20:03:16,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:03:16,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:03:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:03:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:03:16,239 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 11 states. [2020-10-27 20:03:16,565 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-27 20:03:16,848 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-27 20:03:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:03:16,975 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-10-27 20:03:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:03:16,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-27 20:03:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:03:16,978 INFO L225 Difference]: With dead ends: 61 [2020-10-27 20:03:16,978 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 20:03:16,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:03:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 20:03:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-27 20:03:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 20:03:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 20:03:16,992 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 50 [2020-10-27 20:03:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:03:16,992 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 20:03:16,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:03:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 20:03:16,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:03:16,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:03:16,999 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] [2020-10-27 20:03:17,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:03:17,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:03:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:03:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1447791037, now seen corresponding path program 2 times [2020-10-27 20:03:17,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:03:17,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677605702] [2020-10-27 20:03:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:03:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:03:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:03:18,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:03:18,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 20:03:18,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:03:18,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-27 20:03:18,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:03:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 20:03:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 20:03:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:03:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:03:18,765 ERROR L253 erpolLogProxyWrapper]: Interpolant 16 not inductive [2020-10-27 20:03:18,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:03:18,766 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) [2020-10-27 20:03:18,777 INFO L168 Benchmark]: Toolchain (without parser) took 19765.44 ms. Allocated memory was 153.1 MB in the beginning and 463.5 MB in the end (delta: 310.4 MB). Free memory was 126.8 MB in the beginning and 373.5 MB in the end (delta: -246.6 MB). Peak memory consumption was 274.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:03:18,779 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 153.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:03:18,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.49 ms. Allocated memory is still 153.1 MB. Free memory was 126.3 MB in the beginning and 103.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:03:18,790 INFO L168 Benchmark]: Boogie Preprocessor took 105.84 ms. Allocated memory is still 153.1 MB. Free memory was 103.8 MB in the beginning and 101.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:03:18,791 INFO L168 Benchmark]: RCFGBuilder took 796.23 ms. Allocated memory is still 153.1 MB. Free memory was 101.1 MB in the beginning and 128.6 MB in the end (delta: -27.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 8.0 GB. [2020-10-27 20:03:18,792 INFO L168 Benchmark]: TraceAbstraction took 18241.86 ms. Allocated memory was 153.1 MB in the beginning and 463.5 MB in the end (delta: 310.4 MB). Free memory was 128.1 MB in the beginning and 373.5 MB in the end (delta: -245.4 MB). Peak memory consumption was 275.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:03:18,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 153.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 600.49 ms. Allocated memory is still 153.1 MB. Free memory was 126.3 MB in the beginning and 103.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.84 ms. Allocated memory is still 153.1 MB. Free memory was 103.8 MB in the beginning and 101.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 796.23 ms. Allocated memory is still 153.1 MB. Free memory was 101.1 MB in the beginning and 128.6 MB in the end (delta: -27.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18241.86 ms. Allocated memory was 153.1 MB in the beginning and 463.5 MB in the end (delta: 310.4 MB). Free memory was 128.1 MB in the beginning and 373.5 MB in the end (delta: -245.4 MB). Peak memory consumption was 275.3 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...