/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:25:22,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:25:22,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:25:22,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:25:22,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:25:22,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:25:22,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:25:22,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:25:22,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:25:22,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:25:22,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:25:22,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:25:22,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:25:22,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:25:22,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:25:22,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:25:22,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:25:22,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:25:22,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:25:22,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:25:22,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:25:22,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:25:22,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:25:22,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:25:22,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:25:22,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:25:22,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:25:22,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:25:22,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:25:22,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:25:22,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:25:22,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:25:22,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:25:22,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:25:22,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:25:22,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:25:22,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:25:22,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:25:22,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:25:22,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:25:22,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:25:22,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:25:22,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:25:22,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:25:22,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:25:22,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:25:22,461 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:25:22,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:25:22,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:25:22,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:25:22,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:25:22,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:25:22,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:25:22,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:25:22,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:25:22,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:25:22,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:25:22,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:25:22,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:25:22,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:25:22,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:25:22,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:25:22,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:25:22,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:25:22,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:25:22,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:25:22,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:25:22,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:25:22,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:25:22,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:25:22,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:25:22,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:25:22,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:25:22,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:25:22,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:25:22,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:25:22,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:25:22,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-29 09:25:22,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2816759be/6fba954a9bef413ba1b4310c29a7da53/FLAGa117c63e1 [2020-10-29 09:25:23,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:25:23,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-29 09:25:23,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2816759be/6fba954a9bef413ba1b4310c29a7da53/FLAGa117c63e1 [2020-10-29 09:25:23,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2816759be/6fba954a9bef413ba1b4310c29a7da53 [2020-10-29 09:25:23,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:25:23,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:25:23,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:25:23,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:25:23,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:25:23,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:25:23" (1/1) ... [2020-10-29 09:25:23,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b81d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:23, skipping insertion in model container [2020-10-29 09:25:23,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:25:23" (1/1) ... [2020-10-29 09:25:23,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:25:24,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:25:24,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:25:24,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:25:24,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:25:24,742 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:25:24,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24 WrapperNode [2020-10-29 09:25:24,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:25:24,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:25:24,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:25:24,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:25:24,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... [2020-10-29 09:25:24,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... [2020-10-29 09:25:24,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... [2020-10-29 09:25:24,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... [2020-10-29 09:25:24,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... [2020-10-29 09:25:24,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... [2020-10-29 09:25:24,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... [2020-10-29 09:25:24,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:25:24,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:25:24,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:25:24,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:25:24,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:25:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:25:24,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-29 09:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-29 09:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2020-10-29 09:25:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:25:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:25:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:25:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:25:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:25:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:25:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:25:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:25:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:25:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:25:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:25:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:25:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:25:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:25:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:25:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:25:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:25:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:25:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:25:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:25:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:25:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:25:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:25:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:25:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:25:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:25:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:25:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:25:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:25:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:25:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:25:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:25:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:25:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:25:24,923 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:25:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:25:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:25:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:25:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:25:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:25:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:25:24,924 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:25:24,925 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:25:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:25:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:25:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:25:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:25:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:25:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-29 09:25:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-29 09:25:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:25:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:25:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2020-10-29 09:25:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:25:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:25:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:25:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:25:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:25:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:25:25,626 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:25:25,908 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:25:25,908 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 09:25:25,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:25:25 BoogieIcfgContainer [2020-10-29 09:25:25,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:25:25,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:25:25,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:25:25,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:25:25,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:25:23" (1/3) ... [2020-10-29 09:25:25,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f47a7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:25:25, skipping insertion in model container [2020-10-29 09:25:25,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:25:24" (2/3) ... [2020-10-29 09:25:25,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f47a7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:25:25, skipping insertion in model container [2020-10-29 09:25:25,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:25:25" (3/3) ... [2020-10-29 09:25:25,921 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2020-10-29 09:25:25,933 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:25:25,939 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:25:25,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:25:25,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:25:25,984 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:25:25,984 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:25:25,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:25:25,984 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:25:25,984 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:25:25,985 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:25:25,985 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:25:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-29 09:25:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:25:26,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:26,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:26,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:26,022 INFO L82 PathProgramCache]: Analyzing trace with hash 639176777, now seen corresponding path program 1 times [2020-10-29 09:25:26,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:26,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738363715] [2020-10-29 09:25:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:31,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:31,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:25:31,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:25:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:25:31,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:31,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:25:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 09:25:31,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:25:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:31,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:31,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:31,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:31,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:25:31,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:31,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:31,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:31,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:25:31,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 09:25:31,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:31,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:25:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:25:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:25:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:31,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:31,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:31,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:31,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:25:31,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:31,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:25:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:25:31,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:25:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:32,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:25:32,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 09:25:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:32,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:25:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:25:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:32,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:32,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 09:25:32,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:32,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:25:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:25:32,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:25:32,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738363715] [2020-10-29 09:25:32,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:32,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:25:32,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182507441] [2020-10-29 09:25:32,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:25:32,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:32,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:25:32,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:25:32,593 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 18 states. [2020-10-29 09:25:33,554 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 09:25:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:34,751 INFO L93 Difference]: Finished difference Result 118 states and 155 transitions. [2020-10-29 09:25:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:25:34,759 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2020-10-29 09:25:34,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:34,769 INFO L225 Difference]: With dead ends: 118 [2020-10-29 09:25:34,769 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 09:25:34,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-29 09:25:34,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 09:25:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-29 09:25:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:25:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-29 09:25:34,829 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 38 [2020-10-29 09:25:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:34,830 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-29 09:25:34,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:25:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-29 09:25:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 09:25:34,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:34,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:34,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:25:34,833 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:34,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1305858988, now seen corresponding path program 1 times [2020-10-29 09:25:34,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:34,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327821377] [2020-10-29 09:25:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:39,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:39,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 09:25:39,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:25:39,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:39,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:25:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:25:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:40,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:40,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:25:40,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:40,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:40,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:40,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:25:40,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:40,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 09:25:40,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:40,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:25:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:25:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:40,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:40,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:40,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:40,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:40,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:25:40,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:40,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:25:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:25:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:25:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:41,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:41,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:25:41,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-29 09:25:41,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:41,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:25:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:25:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:41,900 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-29 09:25:42,853 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-10-29 09:25:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:43,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:43,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:43,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:43,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 09:25:43,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:43,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:25:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:25:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:43,511 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-29 09:25:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:25:43,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327821377] [2020-10-29 09:25:43,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:43,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:25:43,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118281488] [2020-10-29 09:25:43,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:25:43,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:43,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:25:43,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:25:43,535 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 21 states. [2020-10-29 09:25:44,742 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-29 09:25:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:46,462 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-29 09:25:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:25:46,464 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-10-29 09:25:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:46,467 INFO L225 Difference]: With dead ends: 65 [2020-10-29 09:25:46,467 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:25:46,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:25:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:25:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-29 09:25:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:25:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-29 09:25:46,481 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 38 [2020-10-29 09:25:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:46,481 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-29 09:25:46,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:25:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-29 09:25:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 09:25:46,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:46,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:46,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:25:46,484 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:46,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1046636837, now seen corresponding path program 1 times [2020-10-29 09:25:46,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:46,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001748381] [2020-10-29 09:25:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:51,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:51,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 09:25:51,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4998 [2020-10-29 09:25:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:51,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:25:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:25:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:25:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:51,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:51,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:25:51,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:25:51,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:51,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:25:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:25:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:51,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:25:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:51,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:51,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:25:51,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:51,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 09:25:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:51,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:25:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:25:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:52,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:52,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:52,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:52,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:25:52,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:52,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:25:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:25:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:25:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:52,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:25:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:52,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:52,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:25:52,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-29 09:25:52,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:52,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:25:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:25:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:25:53,104 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-29 09:25:53,457 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-29 09:25:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:25:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:53,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:53,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:25:53,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:25:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 09:25:53,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:53,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:25:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:25:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:25:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:25:53,968 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-10-29 09:25:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:25:53,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001748381] [2020-10-29 09:25:53,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:25:53,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:25:53,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079282603] [2020-10-29 09:25:53,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:25:53,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:25:53,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:25:53,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:25:53,990 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 22 states. [2020-10-29 09:25:55,134 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 09:25:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:25:56,606 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-29 09:25:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:25:56,609 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2020-10-29 09:25:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:25:56,612 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:25:56,612 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 09:25:56,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:25:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 09:25:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-29 09:25:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 09:25:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-29 09:25:56,625 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 41 [2020-10-29 09:25:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:25:56,626 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-29 09:25:56,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:25:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-29 09:25:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:25:56,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:25:56,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:25:56,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:25:56,628 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:25:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:25:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1952643010, now seen corresponding path program 1 times [2020-10-29 09:25:56,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:25:56,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048625909] [2020-10-29 09:25:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:25:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:25:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:25:59,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:25:59,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:25:59,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:25:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3196 [2020-10-29 09:25:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:25:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:25:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 09:25:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:25:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:25:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:00,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:00,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:00,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:00,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:00,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:00,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:00,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:00,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:00,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:26:00,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 09:26:00,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:00,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:26:00,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:26:00,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:00,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:00,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:00,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 09:26:00,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:00,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:26:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:26:00,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:26:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:01,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:26:01,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-29 09:26:01,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:01,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:26:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:26:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:01,943 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-29 09:26:02,444 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-10-29 09:26:02,659 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-29 09:26:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:02,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:02,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 09:26:02,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:02,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:26:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:03,293 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-29 09:26:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:26:03,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048625909] [2020-10-29 09:26:03,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:26:03,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:26:03,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170806484] [2020-10-29 09:26:03,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:26:03,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:03,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:26:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:26:03,323 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 23 states. [2020-10-29 09:26:04,272 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-29 09:26:07,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:07,241 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-29 09:26:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:26:07,242 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2020-10-29 09:26:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:07,245 INFO L225 Difference]: With dead ends: 69 [2020-10-29 09:26:07,245 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 09:26:07,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:26:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 09:26:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-10-29 09:26:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:26:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-29 09:26:07,257 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2020-10-29 09:26:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:07,257 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-29 09:26:07,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:26:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-29 09:26:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:26:07,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:07,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:07,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:26:07,260 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:07,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1119452514, now seen corresponding path program 1 times [2020-10-29 09:26:07,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:07,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246569698] [2020-10-29 09:26:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:07,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:11,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:11,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 09:26:11,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:26:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3907 [2020-10-29 09:26:11,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:11,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:26:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:26:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:11,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:11,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:11,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:11,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:26:11,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:11,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:11,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:11,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:11,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:11,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:26:11,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:11,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:11,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:11,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:11,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:11,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:11,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:11,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:26:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:11,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:26:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 09:26:11,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:11,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:26:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:26:11,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:11,725 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-10-29 09:26:11,923 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-29 09:26:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:12,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:26:12,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:12,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:26:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:26:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 09:26:12,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246569698] [2020-10-29 09:26:12,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:26:12,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 09:26:12,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415097564] [2020-10-29 09:26:12,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:26:12,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:12,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:26:12,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:26:12,165 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 14 states. [2020-10-29 09:26:13,260 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-29 09:26:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:14,167 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-10-29 09:26:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:26:14,168 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-29 09:26:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:14,170 INFO L225 Difference]: With dead ends: 72 [2020-10-29 09:26:14,170 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 09:26:14,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:26:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 09:26:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-10-29 09:26:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 09:26:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2020-10-29 09:26:14,182 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 48 [2020-10-29 09:26:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:14,183 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2020-10-29 09:26:14,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:26:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2020-10-29 09:26:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 09:26:14,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:14,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:14,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:26:14,185 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash -439394144, now seen corresponding path program 1 times [2020-10-29 09:26:14,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:14,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370367668] [2020-10-29 09:26:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:16,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:16,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 09:26:16,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-10-29 09:26:16,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:16,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 09:26:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:26:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:16,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:16,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:16,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:26:16,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:16,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:16,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:16,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:16,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 09:26:16,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:16,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:26:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:16,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:16,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:26:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:17,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:17,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:26:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:26:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:17,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:17,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:26:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:17,942 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-29 09:26:18,296 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-29 09:26:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:18,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:18,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:18,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 09:26:18,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:18,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:26:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:18,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:18,894 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-29 09:26:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:26:18,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370367668] [2020-10-29 09:26:18,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:26:18,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 09:26:18,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654668507] [2020-10-29 09:26:18,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 09:26:18,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:18,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 09:26:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:26:18,913 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 26 states. [2020-10-29 09:26:19,877 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-29 09:26:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:21,596 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-10-29 09:26:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:26:21,598 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 48 [2020-10-29 09:26:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:21,599 INFO L225 Difference]: With dead ends: 74 [2020-10-29 09:26:21,599 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 09:26:21,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:26:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 09:26:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-10-29 09:26:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 09:26:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-29 09:26:21,623 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 48 [2020-10-29 09:26:21,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:21,623 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-29 09:26:21,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 09:26:21,624 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-29 09:26:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:26:21,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:21,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:21,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:26:21,631 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:21,631 INFO L82 PathProgramCache]: Analyzing trace with hash 72872709, now seen corresponding path program 1 times [2020-10-29 09:26:21,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:21,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049444818] [2020-10-29 09:26:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:21,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:26:21,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 09:26:21,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:26:21,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:26:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:21,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:21,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:21,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:21,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:21,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:26:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 09:26:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:21,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:26:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:26:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:22,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:26:22,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:26:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:26:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:26:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:26:22,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:26:22,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 09:26:22,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:22,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:22,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:22,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:26:22,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:22,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 09:26:22,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049444818] [2020-10-29 09:26:22,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:26:22,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:26:22,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759291330] [2020-10-29 09:26:22,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:26:22,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:22,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:26:22,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:26:22,107 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 7 states. [2020-10-29 09:26:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:22,568 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-29 09:26:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:26:22,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-29 09:26:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:22,570 INFO L225 Difference]: With dead ends: 84 [2020-10-29 09:26:22,570 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 09:26:22,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:26:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 09:26:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-29 09:26:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 09:26:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-29 09:26:22,594 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 45 [2020-10-29 09:26:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:22,594 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-29 09:26:22,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:26:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-29 09:26:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:26:22,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:22,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:22,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:26:22,597 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:22,597 INFO L82 PathProgramCache]: Analyzing trace with hash 733227689, now seen corresponding path program 1 times [2020-10-29 09:26:22,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:22,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134493371] [2020-10-29 09:26:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:22,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:26,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:26:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:26:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3751 [2020-10-29 09:26:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:26,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 09:26:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:26,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:26,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:26,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:26,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:26,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:26,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:26,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:26,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:26,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:26,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:26,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:26:26,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:26,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:26:26,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:26,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:26:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:26,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:26,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:26,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:26:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:27,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:27,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:27,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:27,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:26:27,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:27,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:26:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:26:27,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134493371] [2020-10-29 09:26:27,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:26:27,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:26:27,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261080895] [2020-10-29 09:26:27,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:26:27,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:26:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:26:27,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:26:27,516 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 19 states. [2020-10-29 09:26:28,743 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-29 09:26:28,967 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-10-29 09:26:29,335 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-29 09:26:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:26:30,053 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2020-10-29 09:26:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:26:30,054 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-10-29 09:26:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:26:30,056 INFO L225 Difference]: With dead ends: 82 [2020-10-29 09:26:30,056 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:26:30,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:26:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:26:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-29 09:26:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 09:26:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-29 09:26:30,064 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 51 [2020-10-29 09:26:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:26:30,065 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-29 09:26:30,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:26:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-29 09:26:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 09:26:30,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:26:30,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:26:30,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:26:30,066 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:26:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:26:30,067 INFO L82 PathProgramCache]: Analyzing trace with hash 991393127, now seen corresponding path program 1 times [2020-10-29 09:26:30,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:26:30,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785726436] [2020-10-29 09:26:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:26:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:35,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:35,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 09:26:35,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:26:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 09:26:35,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:35,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 09:26:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:26:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:26:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:35,407 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-29 09:26:35,608 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-29 09:26:35,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:26:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:35,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:35,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:26:35,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:26:35,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:26:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:26:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:36,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:36,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:26:36,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:36,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 09:26:36,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:36,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:36,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:26:36,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 09:26:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:36,614 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-10-29 09:26:36,807 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-29 09:26:36,961 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-29 09:26:37,144 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 09:26:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:26:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:37,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:37,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:37,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:37,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:26:37,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:37,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:26:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:26:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:26:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:26:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:37,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:26:37,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:26:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:37,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:26:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:26:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:26:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 09:26:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:26:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:26:38,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:26:38,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:26:38,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:26:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-29 09:26:38,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:26:38,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:26:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:26:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:26:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:26:38,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0