/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-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:00:10,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:00:10,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:00:10,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:00:10,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:00:10,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:00:10,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:00:10,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:00:10,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:00:10,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:00:10,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:00:10,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:00:10,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:00:10,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:00:10,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:00:10,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:00:10,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:00:10,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:00:10,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:00:10,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:00:10,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:00:10,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:00:10,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:00:10,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:00:10,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:00:10,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:00:10,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:00:10,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:00:10,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:00:10,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:00:10,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:00:10,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:00:10,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:00:10,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:00:10,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:00:10,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:00:10,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:00:10,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:00:10,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:00:10,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:00:10,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:00:10,356 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 20:00:10,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:00:10,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:00:10,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:00:10,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:00:10,389 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:00:10,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:00:10,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:00:10,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:00:10,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:00:10,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:00:10,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:00:10,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:00:10,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:00:10,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:00:10,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:00:10,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:00:10,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:00:10,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:00:10,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:00:10,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:00:10,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:00:10,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:00:10,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:00:10,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:00:10,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:00:10,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:00:10,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:00:10,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:00:10,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:00:10,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:00:10,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:00:10,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:00:10,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:00:10,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:00:10,816 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:00:10,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-10-27 20:00:10,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acafcb293/85a7e2cf7bfc462cbb9a6fa0a5cd397b/FLAG12df91c63 [2020-10-27 20:00:11,639 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:00:11,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list-2.i [2020-10-27 20:00:11,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acafcb293/85a7e2cf7bfc462cbb9a6fa0a5cd397b/FLAG12df91c63 [2020-10-27 20:00:11,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acafcb293/85a7e2cf7bfc462cbb9a6fa0a5cd397b [2020-10-27 20:00:11,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:00:11,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:00:11,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:00:11,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:00:11,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:00:11,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:00:11" (1/1) ... [2020-10-27 20:00:11,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6148e8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:11, skipping insertion in model container [2020-10-27 20:00:11,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:00:11" (1/1) ... [2020-10-27 20:00:11,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:00:11,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:00:12,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:00:12,341 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:00:12,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:00:12,498 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:00:12,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12 WrapperNode [2020-10-27 20:00:12,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:00:12,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:00:12,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:00:12,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:00:12,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (1/1) ... [2020-10-27 20:00:12,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (1/1) ... [2020-10-27 20:00:12,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (1/1) ... [2020-10-27 20:00:12,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (1/1) ... [2020-10-27 20:00:12,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (1/1) ... [2020-10-27 20:00:12,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (1/1) ... [2020-10-27 20:00:12,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (1/1) ... [2020-10-27 20:00:12,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:00:12,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:00:12,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:00:12,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:00:12,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (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 20:00:12,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:00:12,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:00:12,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:00:12,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 20:00:12,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 20:00:12,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-27 20:00:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-27 20:00:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-27 20:00:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 20:00:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:00:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:00:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:00:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:00:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:00:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:00:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:00:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:00:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 20:00:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 20:00:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 20:00:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 20:00:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 20:00:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 20:00:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 20:00:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 20:00:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 20:00:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 20:00:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 20:00:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 20:00:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 20:00:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 20:00:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 20:00:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 20:00:12,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 20:00:12,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 20:00:12,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 20:00:12,664 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 20:00:12,664 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 20:00:12,664 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 20:00:12,664 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 20:00:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 20:00:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 20:00:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 20:00:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 20:00:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 20:00:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 20:00:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 20:00:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 20:00:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 20:00:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 20:00:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 20:00:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 20:00:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 20:00:12,666 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 20:00:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 20:00:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 20:00:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 20:00:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 20:00:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 20:00:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 20:00:12,667 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 20:00:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 20:00:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 20:00:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 20:00:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 20:00:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 20:00:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 20:00:12,668 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 20:00:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 20:00:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 20:00:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 20:00:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 20:00:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 20:00:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 20:00:12,669 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 20:00:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 20:00:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 20:00:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 20:00:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 20:00:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 20:00:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 20:00:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 20:00:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 20:00:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 20:00:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 20:00:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 20:00:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 20:00:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 20:00:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 20:00:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 20:00:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 20:00:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 20:00:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 20:00:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 20:00:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 20:00:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 20:00:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:00:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 20:00:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:00:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 20:00:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 20:00:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:00:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:00:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:00:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:00:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:00:13,194 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 20:00:13,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:00:13,466 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 20:00:13,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:00:13 BoogieIcfgContainer [2020-10-27 20:00:13,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:00:13,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:00:13,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:00:13,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:00:13,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:00:11" (1/3) ... [2020-10-27 20:00:13,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28754483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:00:13, skipping insertion in model container [2020-10-27 20:00:13,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:00:12" (2/3) ... [2020-10-27 20:00:13,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28754483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:00:13, skipping insertion in model container [2020-10-27 20:00:13,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:00:13" (3/3) ... [2020-10-27 20:00:13,479 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-10-27 20:00:13,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:00:13,498 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:00:13,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:00:13,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:00:13,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:00:13,542 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:00:13,542 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:00:13,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:00:13,542 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:00:13,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:00:13,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:00:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-27 20:00:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 20:00:13,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:13,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:13,570 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash 620344659, now seen corresponding path program 1 times [2020-10-27 20:00:13,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:13,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794030307] [2020-10-27 20:00:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:14,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:14,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 20:00:14,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:00:14,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-27 20:00:14,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 20:00:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:00:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:14,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:14,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:14,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:00:14,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:14,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:14,429 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 20:00:14,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794030307] [2020-10-27 20:00:14,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:00:14,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:00:14,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878859515] [2020-10-27 20:00:14,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:00:14,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:14,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:00:14,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:00:14,459 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-27 20:00:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:14,647 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2020-10-27 20:00:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:00:14,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-27 20:00:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:14,659 INFO L225 Difference]: With dead ends: 63 [2020-10-27 20:00:14,660 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 20:00:14,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:00:14,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 20:00:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 20:00:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 20:00:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-27 20:00:14,718 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2020-10-27 20:00:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:14,719 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-27 20:00:14,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:00:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-27 20:00:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 20:00:14,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:14,721 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] [2020-10-27 20:00:14,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:00:14,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:14,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:14,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1278182859, now seen corresponding path program 1 times [2020-10-27 20:00:14,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:14,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273540729] [2020-10-27 20:00:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:14,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:14,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:14,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:00:14,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 20:00:14,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:00:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:00:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:00:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:14,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:14,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:15,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:15,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:00:15,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:15,009 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 20:00:15,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273540729] [2020-10-27 20:00:15,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:00:15,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:00:15,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225389019] [2020-10-27 20:00:15,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:00:15,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:15,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:00:15,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:00:15,013 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-10-27 20:00:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:15,243 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-10-27 20:00:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:00:15,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-27 20:00:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:15,248 INFO L225 Difference]: With dead ends: 53 [2020-10-27 20:00:15,248 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 20:00:15,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:00:15,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 20:00:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2020-10-27 20:00:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 20:00:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-27 20:00:15,262 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 22 [2020-10-27 20:00:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:15,263 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-27 20:00:15,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:00:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-27 20:00:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 20:00:15,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:15,267 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:15,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:00:15,268 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:15,272 INFO L82 PathProgramCache]: Analyzing trace with hash -511611450, now seen corresponding path program 1 times [2020-10-27 20:00:15,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:15,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435061517] [2020-10-27 20:00:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:15,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:15,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:00:15,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 20:00:15,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:00:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:00:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:00:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:15,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:15,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:15,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:15,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:00:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:15,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435061517] [2020-10-27 20:00:15,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:00:15,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:00:15,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472007141] [2020-10-27 20:00:15,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:00:15,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:15,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:00:15,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:00:15,563 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 6 states. [2020-10-27 20:00:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:15,919 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-27 20:00:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:00:15,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-27 20:00:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:15,922 INFO L225 Difference]: With dead ends: 55 [2020-10-27 20:00:15,922 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 20:00:15,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:00:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 20:00:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2020-10-27 20:00:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 20:00:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-27 20:00:15,930 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 24 [2020-10-27 20:00:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:15,931 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-27 20:00:15,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:00:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-27 20:00:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 20:00:15,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:15,932 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:15,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:00:15,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:15,933 INFO L82 PathProgramCache]: Analyzing trace with hash 680437702, now seen corresponding path program 1 times [2020-10-27 20:00:15,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:15,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22991601] [2020-10-27 20:00:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:16,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:16,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:00:16,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 20:00:16,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:00:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:00:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:00:16,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:16,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:16,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:16,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:16,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:00:16,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:16,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:16,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:16,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22991601] [2020-10-27 20:00:16,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:00:16,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:00:16,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181021101] [2020-10-27 20:00:16,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:00:16,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:16,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:00:16,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:00:16,172 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 6 states. [2020-10-27 20:00:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:16,394 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-27 20:00:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:00:16,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-27 20:00:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:16,396 INFO L225 Difference]: With dead ends: 55 [2020-10-27 20:00:16,396 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 20:00:16,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:00:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 20:00:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2020-10-27 20:00:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 20:00:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 20:00:16,403 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2020-10-27 20:00:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:16,403 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 20:00:16,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:00:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 20:00:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:00:16,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:16,405 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:16,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:00:16,405 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:16,406 INFO L82 PathProgramCache]: Analyzing trace with hash 134346418, now seen corresponding path program 1 times [2020-10-27 20:00:16,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:16,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918719607] [2020-10-27 20:00:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:16,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:00:16,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:00:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 20:00:16,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:00:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:00:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:00:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:17,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:17,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:17,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:17,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:17,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:00:17,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:17,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918719607] [2020-10-27 20:00:17,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:17,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:00:17,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714178772] [2020-10-27 20:00:17,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:00:17,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:17,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:00:17,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:00:17,031 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 10 states. [2020-10-27 20:00:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:17,411 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-27 20:00:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:00:17,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-27 20:00:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:17,412 INFO L225 Difference]: With dead ends: 57 [2020-10-27 20:00:17,413 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 20:00:17,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:00:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 20:00:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2020-10-27 20:00:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 20:00:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-27 20:00:17,420 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 26 [2020-10-27 20:00:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:17,420 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-27 20:00:17,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:00:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-27 20:00:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:00:17,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:17,421 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:17,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:00:17,422 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:17,422 INFO L82 PathProgramCache]: Analyzing trace with hash 934657394, now seen corresponding path program 1 times [2020-10-27 20:00:17,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:17,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179702177] [2020-10-27 20:00:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:17,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:17,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:17,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:00:17,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:00:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 20:00:17,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:17,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:00:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:00:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:00:17,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:17,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:17,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:17,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:00:17,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:17,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179702177] [2020-10-27 20:00:17,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:17,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:00:17,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127624024] [2020-10-27 20:00:17,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:00:17,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:17,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:00:17,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:00:17,854 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-10-27 20:00:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:18,345 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-10-27 20:00:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:00:18,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-27 20:00:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:18,350 INFO L225 Difference]: With dead ends: 66 [2020-10-27 20:00:18,350 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 20:00:18,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:00:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 20:00:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2020-10-27 20:00:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:00:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-27 20:00:18,357 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2020-10-27 20:00:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:18,358 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-27 20:00:18,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:00:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-27 20:00:18,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 20:00:18,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:18,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:18,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:00:18,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:18,378 INFO L82 PathProgramCache]: Analyzing trace with hash -226803475, now seen corresponding path program 1 times [2020-10-27 20:00:18,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:18,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609746021] [2020-10-27 20:00:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:18,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:19,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:19,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 20:00:19,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:00:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-27 20:00:19,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:00:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:00:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:00:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:19,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:19,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:19,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:19,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:19,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:00:19,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:19,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609746021] [2020-10-27 20:00:19,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:19,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:00:19,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969378796] [2020-10-27 20:00:19,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:00:19,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:19,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:00:19,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:00:19,479 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 8 states. [2020-10-27 20:00:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:19,776 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-10-27 20:00:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:00:19,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-27 20:00:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:19,780 INFO L225 Difference]: With dead ends: 68 [2020-10-27 20:00:19,780 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 20:00:19,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:00:19,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 20:00:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-10-27 20:00:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 20:00:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-27 20:00:19,791 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 28 [2020-10-27 20:00:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:19,794 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-27 20:00:19,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:00:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-27 20:00:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 20:00:19,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:19,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:19,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:00:19,796 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:19,797 INFO L82 PathProgramCache]: Analyzing trace with hash 965245677, now seen corresponding path program 1 times [2020-10-27 20:00:19,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:19,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119022296] [2020-10-27 20:00:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:19,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:19,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 20:00:19,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 20:00:19,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:00:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:00:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:20,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:20,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:20,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:20,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:00:20,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:20,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119022296] [2020-10-27 20:00:20,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:20,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:00:20,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442605931] [2020-10-27 20:00:20,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:00:20,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:20,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:00:20,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:00:20,256 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 10 states. [2020-10-27 20:00:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:20,766 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-10-27 20:00:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:00:20,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-27 20:00:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:20,768 INFO L225 Difference]: With dead ends: 70 [2020-10-27 20:00:20,768 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 20:00:20,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:00:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 20:00:20,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2020-10-27 20:00:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 20:00:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-27 20:00:20,776 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 28 [2020-10-27 20:00:20,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:20,776 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-27 20:00:20,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:00:20,777 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-27 20:00:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:00:20,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:20,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:20,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:00:20,778 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:20,779 INFO L82 PathProgramCache]: Analyzing trace with hash -596532632, now seen corresponding path program 1 times [2020-10-27 20:00:20,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:20,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382775471] [2020-10-27 20:00:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:20,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:20,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:00:20,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 20:00:20,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:00:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:00:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:21,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:21,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:00:21,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:21,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:21,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:21,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382775471] [2020-10-27 20:00:21,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:21,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:00:21,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577491131] [2020-10-27 20:00:21,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:00:21,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:21,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:00:21,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:00:21,212 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 10 states. [2020-10-27 20:00:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:21,709 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-10-27 20:00:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:00:21,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-27 20:00:21,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:21,713 INFO L225 Difference]: With dead ends: 72 [2020-10-27 20:00:21,713 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 20:00:21,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:00:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 20:00:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2020-10-27 20:00:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:00:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-27 20:00:21,720 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 30 [2020-10-27 20:00:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:21,720 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-27 20:00:21,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:00:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-27 20:00:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:00:21,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:21,722 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:21,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:00:21,722 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:21,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash 595516520, now seen corresponding path program 2 times [2020-10-27 20:00:21,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:21,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404545857] [2020-10-27 20:00:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:21,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:00:21,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 20:00:21,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:00:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:00:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:22,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:22,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:22,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:22,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:00:22,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:22,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:22,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404545857] [2020-10-27 20:00:22,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:22,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:00:22,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433737083] [2020-10-27 20:00:22,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:00:22,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:00:22,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:00:22,141 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2020-10-27 20:00:22,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:22,640 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-27 20:00:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:00:22,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-27 20:00:22,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:22,643 INFO L225 Difference]: With dead ends: 65 [2020-10-27 20:00:22,643 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 20:00:22,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:00:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 20:00:22,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-27 20:00:22,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 20:00:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-27 20:00:22,650 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 30 [2020-10-27 20:00:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:22,651 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-27 20:00:22,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:00:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-27 20:00:22,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:00:22,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:22,652 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:22,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:00:22,652 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:22,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:22,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1043096551, now seen corresponding path program 2 times [2020-10-27 20:00:22,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:22,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877968226] [2020-10-27 20:00:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:22,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:22,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:00:22,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 20:00:22,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:00:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:00:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:23,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:23,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:23,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:00:23,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:23,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877968226] [2020-10-27 20:00:23,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:23,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:00:23,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642170172] [2020-10-27 20:00:23,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:00:23,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:23,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:00:23,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:00:23,074 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 11 states. [2020-10-27 20:00:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:23,509 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2020-10-27 20:00:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:00:23,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-27 20:00:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:23,511 INFO L225 Difference]: With dead ends: 63 [2020-10-27 20:00:23,511 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 20:00:23,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:00:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 20:00:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-10-27 20:00:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 20:00:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-27 20:00:23,519 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 30 [2020-10-27 20:00:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:23,520 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-27 20:00:23,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:00:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-27 20:00:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:00:23,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:23,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:23,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:00:23,521 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:23,522 INFO L82 PathProgramCache]: Analyzing trace with hash -792329511, now seen corresponding path program 1 times [2020-10-27 20:00:23,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:23,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444846509] [2020-10-27 20:00:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:23,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:23,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:00:23,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 20:00:23,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:00:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:00:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:24,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:24,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:00:24,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:24,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:24,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444846509] [2020-10-27 20:00:24,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:24,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:00:24,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915364117] [2020-10-27 20:00:24,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:00:24,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:24,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:00:24,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:00:24,016 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 11 states. [2020-10-27 20:00:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:24,436 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-10-27 20:00:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:00:24,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-27 20:00:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:24,439 INFO L225 Difference]: With dead ends: 58 [2020-10-27 20:00:24,439 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 20:00:24,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:00:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 20:00:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-27 20:00:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 20:00:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-27 20:00:24,448 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 30 [2020-10-27 20:00:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:24,449 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-27 20:00:24,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:00:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-27 20:00:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 20:00:24,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:24,450 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:24,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:00:24,451 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:24,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:24,451 INFO L82 PathProgramCache]: Analyzing trace with hash -981048684, now seen corresponding path program 3 times [2020-10-27 20:00:24,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:24,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715463711] [2020-10-27 20:00:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 20:00:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-27 20:00:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:00:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:00:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:00:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:00:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:00:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:00:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:00:25,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:00:25,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:00:25,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:00:25,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:00:25,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:00:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:00:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:00:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:00:25,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:00:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:00:25,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715463711] [2020-10-27 20:00:25,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:00:25,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 20:00:25,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347874047] [2020-10-27 20:00:25,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:00:25,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:00:25,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:00:25,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:00:25,136 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 12 states. [2020-10-27 20:00:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:00:26,231 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2020-10-27 20:00:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:00:26,232 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-27 20:00:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:00:26,233 INFO L225 Difference]: With dead ends: 89 [2020-10-27 20:00:26,233 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 20:00:26,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:00:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 20:00:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2020-10-27 20:00:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 20:00:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-10-27 20:00:26,244 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 32 [2020-10-27 20:00:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:00:26,244 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-10-27 20:00:26,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:00:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-10-27 20:00:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 20:00:26,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:00:26,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:00:26,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:00:26,246 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:00:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:00:26,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1704140972, now seen corresponding path program 1 times [2020-10-27 20:00:26,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:00:26,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92185997] [2020-10-27 20:00:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:00:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 20:00:26,263 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 20:00:26,264 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:00:26,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:00:26,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:00:26 BoogieIcfgContainer [2020-10-27 20:00:26,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:00:26,288 INFO L168 Benchmark]: Toolchain (without parser) took 14391.91 ms. Allocated memory was 162.5 MB in the beginning and 314.6 MB in the end (delta: 152.0 MB). Free memory was 144.1 MB in the beginning and 191.2 MB in the end (delta: -47.1 MB). Peak memory consumption was 104.2 MB. Max. memory is 8.0 GB. [2020-10-27 20:00:26,288 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 162.5 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:00:26,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.86 ms. Allocated memory is still 162.5 MB. Free memory was 143.4 MB in the beginning and 134.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:00:26,290 INFO L168 Benchmark]: Boogie Preprocessor took 63.99 ms. Allocated memory is still 162.5 MB. Free memory was 134.2 MB in the beginning and 131.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:00:26,290 INFO L168 Benchmark]: RCFGBuilder took 903.67 ms. Allocated memory was 162.5 MB in the beginning and 209.7 MB in the end (delta: 47.2 MB). Free memory was 131.4 MB in the beginning and 181.2 MB in the end (delta: -49.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:00:26,291 INFO L168 Benchmark]: TraceAbstraction took 12815.14 ms. Allocated memory was 209.7 MB in the beginning and 314.6 MB in the end (delta: 104.9 MB). Free memory was 180.7 MB in the beginning and 191.2 MB in the end (delta: -10.5 MB). Peak memory consumption was 94.9 MB. Max. memory is 8.0 GB. [2020-10-27 20:00:26,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 162.5 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 597.86 ms. Allocated memory is still 162.5 MB. Free memory was 143.4 MB in the beginning and 134.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.99 ms. Allocated memory is still 162.5 MB. Free memory was 134.2 MB in the beginning and 131.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 903.67 ms. Allocated memory was 162.5 MB in the beginning and 209.7 MB in the end (delta: 47.2 MB). Free memory was 131.4 MB in the beginning and 181.2 MB in the end (delta: -49.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12815.14 ms. Allocated memory was 209.7 MB in the beginning and 314.6 MB in the end (delta: 104.9 MB). Free memory was 180.7 MB in the beginning and 191.2 MB in the end (delta: -10.5 MB). Peak memory consumption was 94.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND TRUE __VERIFIER_nondet_int() [L537] p->h = 1 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND TRUE __VERIFIER_nondet_int() [L544] p->h = 2 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h [L554] COND TRUE p->h == 1 [L555] EXPR p->n [L555] p = p->n [L554] EXPR p->h [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 290 SDtfs, 460 SDslu, 1022 SDs, 0 SdLazy, 1914 SolverSat, 217 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 129 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 77619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 12/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...