/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/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:18:39,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:18:39,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:18:39,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:18:39,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:18:39,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:18:39,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:18:39,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:18:39,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:18:39,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:18:39,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:18:39,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:18:39,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:18:39,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:18:39,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:18:39,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:18:39,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:18:39,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:18:39,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:18:39,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:18:39,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:18:39,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:18:39,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:18:39,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:18:39,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:18:39,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:18:39,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:18:39,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:18:39,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:18:39,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:18:39,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:18:39,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:18:39,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:18:39,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:18:39,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:18:39,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:18:39,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:18:39,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:18:39,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:18:39,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:18:39,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:18:39,843 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 09:18:39,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:18:39,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:18:39,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:18:39,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:18:39,874 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:18:39,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:18:39,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:18:39,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:18:39,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:18:39,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:18:39,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:18:39,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:18:39,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:18:39,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:18:39,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:18:39,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:18:39,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:18:39,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:18:39,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:18:39,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:18:39,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:18:39,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:18:39,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:18:39,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:18:39,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:18:39,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:18:39,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:18:39,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:18:39,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:18:39,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:18:40,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:18:40,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:18:40,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:18:40,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:18:40,349 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:18:40,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-10-29 09:18:40,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1291a85c1/ec69d6d009c1487a9a7936797d305a1f/FLAGff38f9ea1 [2020-10-29 09:18:41,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:18:41,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-10-29 09:18:41,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1291a85c1/ec69d6d009c1487a9a7936797d305a1f/FLAGff38f9ea1 [2020-10-29 09:18:41,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1291a85c1/ec69d6d009c1487a9a7936797d305a1f [2020-10-29 09:18:41,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:18:41,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:18:41,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:18:41,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:18:41,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:18:41,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:18:41" (1/1) ... [2020-10-29 09:18:41,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cdff67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:41, skipping insertion in model container [2020-10-29 09:18:41,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:18:41" (1/1) ... [2020-10-29 09:18:41,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:18:41,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:18:41,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:18:41,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:18:41,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:18:42,056 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:18:42,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42 WrapperNode [2020-10-29 09:18:42,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:18:42,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:18:42,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:18:42,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:18:42,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (1/1) ... [2020-10-29 09:18:42,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (1/1) ... [2020-10-29 09:18:42,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (1/1) ... [2020-10-29 09:18:42,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (1/1) ... [2020-10-29 09:18:42,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (1/1) ... [2020-10-29 09:18:42,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (1/1) ... [2020-10-29 09:18:42,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (1/1) ... [2020-10-29 09:18:42,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:18:42,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:18:42,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:18:42,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:18:42,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (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 09:18:42,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:18:42,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:18:42,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:18:42,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-29 09:18:42,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-10-29 09:18:42,244 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-10-29 09:18:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-29 09:18:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-10-29 09:18:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:18:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:18:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:18:42,245 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:18:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:18:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-29 09:18:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-29 09:18:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-29 09:18:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-29 09:18:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-29 09:18:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-29 09:18:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-29 09:18:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-29 09:18:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-29 09:18:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-29 09:18:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-29 09:18:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-29 09:18:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-29 09:18:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-29 09:18:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-29 09:18:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-29 09:18:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-29 09:18:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-29 09:18:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-29 09:18:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-29 09:18:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-29 09:18:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-29 09:18:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-29 09:18:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-29 09:18:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-29 09:18:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-29 09:18:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-29 09:18:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-29 09:18:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-29 09:18:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-29 09:18:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-29 09:18:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-29 09:18:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-29 09:18:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-29 09:18:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-29 09:18:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-29 09:18:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-29 09:18:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-29 09:18:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-29 09:18:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-29 09:18:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-29 09:18:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-29 09:18:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-29 09:18:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-29 09:18:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-29 09:18:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-29 09:18:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-29 09:18:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-29 09:18:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-29 09:18:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-29 09:18:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-29 09:18:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-29 09:18:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-29 09:18:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-29 09:18:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-29 09:18:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-29 09:18:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-29 09:18:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-29 09:18:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-29 09:18:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-29 09:18:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-29 09:18:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-29 09:18:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-29 09:18:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-29 09:18:42,257 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-29 09:18:42,257 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-29 09:18:42,257 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-29 09:18:42,257 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-29 09:18:42,257 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-29 09:18:42,257 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-29 09:18:42,257 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-29 09:18:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-29 09:18:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-29 09:18:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-29 09:18:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-29 09:18:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-29 09:18:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-29 09:18:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-29 09:18:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-29 09:18:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-29 09:18:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-29 09:18:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-29 09:18:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-29 09:18:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-29 09:18:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-29 09:18:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-29 09:18:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-29 09:18:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-29 09:18:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-29 09:18:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-29 09:18:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-29 09:18:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-29 09:18:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-29 09:18:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-29 09:18:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-29 09:18:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:18:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:18:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:18:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:18:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:18:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-10-29 09:18:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:18:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-10-29 09:18:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-10-29 09:18:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-10-29 09:18:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-10-29 09:18:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-10-29 09:18:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-10-29 09:18:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-10-29 09:18:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-10-29 09:18:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-10-29 09:18:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-10-29 09:18:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-10-29 09:18:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:18:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-10-29 09:18:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-10-29 09:18:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-29 09:18:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-10-29 09:18:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:18:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:18:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:18:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:18:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:18:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:18:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:18:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:18:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:18:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:18:42,905 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:18:42,905 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:18:42,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:18:42 BoogieIcfgContainer [2020-10-29 09:18:42,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:18:42,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:18:42,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:18:42,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:18:42,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:18:41" (1/3) ... [2020-10-29 09:18:42,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ef56ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:18:42, skipping insertion in model container [2020-10-29 09:18:42,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:42" (2/3) ... [2020-10-29 09:18:42,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ef56ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:18:42, skipping insertion in model container [2020-10-29 09:18:42,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:18:42" (3/3) ... [2020-10-29 09:18:42,919 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-10-29 09:18:42,937 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:18:42,943 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:18:42,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:18:43,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:18:43,002 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:18:43,003 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:18:43,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:18:43,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:18:43,003 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:18:43,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:18:43,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:18:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-29 09:18:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 09:18:43,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:18:43,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:18:43,038 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:18:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:18:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1013982880, now seen corresponding path program 1 times [2020-10-29 09:18:43,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:18:43,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025166302] [2020-10-29 09:18:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:18:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:43,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:43,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:18:43,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:43,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-29 09:18:43,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:43,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:18:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:18:43,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:18:43,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:18:43,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:18:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:43,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:43,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:43,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:18:43,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:43,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:18:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:18:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:18:43,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025166302] [2020-10-29 09:18:43,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:18:43,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:18:43,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468220378] [2020-10-29 09:18:43,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:18:43,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:18:43,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:18:43,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:18:43,888 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 7 states. [2020-10-29 09:18:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:18:44,377 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-10-29 09:18:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:18:44,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-29 09:18:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:18:44,390 INFO L225 Difference]: With dead ends: 93 [2020-10-29 09:18:44,390 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 09:18:44,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:18:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 09:18:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-29 09:18:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 09:18:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-29 09:18:44,446 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 14 [2020-10-29 09:18:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:18:44,447 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-29 09:18:44,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:18:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-29 09:18:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:18:44,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:18:44,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:18:44,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:18:44,450 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:18:44,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:18:44,451 INFO L82 PathProgramCache]: Analyzing trace with hash -709310003, now seen corresponding path program 1 times [2020-10-29 09:18:44,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:18:44,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093368013] [2020-10-29 09:18:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:18:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:44,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:49,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:49,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:18:49,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:18:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 09:18:49,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:49,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:18:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:18:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:18:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:49,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:18:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:49,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:49,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:18:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:49,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:18:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:18:49,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:18:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:49,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:49,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:18:49,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:18:49,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:49,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:18:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:49,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:18:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:49,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:49,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:49,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:18:49,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:49,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:49,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:18:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:49,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:18:49,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:18:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:49,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:49,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:18:49,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:18:49,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:49,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:18:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:49,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:18:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:49,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:49,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:49,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:49,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:18:49,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:49,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:18:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:18:49,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 09:18:49,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093368013] [2020-10-29 09:18:49,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:18:49,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:18:49,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877900517] [2020-10-29 09:18:49,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:18:49,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:18:49,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:18:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:18:49,895 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-29 09:18:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:18:50,697 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-10-29 09:18:50,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:18:50,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-29 09:18:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:18:50,702 INFO L225 Difference]: With dead ends: 72 [2020-10-29 09:18:50,703 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 09:18:50,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:18:50,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 09:18:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-29 09:18:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:18:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-29 09:18:50,736 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 39 [2020-10-29 09:18:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:18:50,737 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-29 09:18:50,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:18:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-29 09:18:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:18:50,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:18:50,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:18:50,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:18:50,742 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:18:50,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:18:50,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1736373279, now seen corresponding path program 1 times [2020-10-29 09:18:50,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:18:50,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854145586] [2020-10-29 09:18:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:18:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:54,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:54,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:18:54,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:18:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3363 [2020-10-29 09:18:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:54,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:18:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:18:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:18:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:18:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:54,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:54,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:18:54,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:54,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:18:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:18:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:54,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:54,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:18:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:18:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:54,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:54,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:54,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:54,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:18:54,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:54,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:18:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:18:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:18:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:54,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:18:54,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:18:54,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:54,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:18:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:18:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:18:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:54,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:54,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:54,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:54,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:18:54,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:54,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:18:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:18:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:18:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:54,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:54,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:54,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:18:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:54,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:18:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:18:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:18:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:18:54,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854145586] [2020-10-29 09:18:54,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:18:54,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 09:18:54,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183200030] [2020-10-29 09:18:54,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:18:54,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:18:54,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:18:54,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:18:54,625 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 13 states. [2020-10-29 09:18:55,170 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-29 09:18:55,318 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-29 09:18:55,678 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 09:18:55,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:18:55,954 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-10-29 09:18:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:18:55,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-29 09:18:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:18:55,958 INFO L225 Difference]: With dead ends: 101 [2020-10-29 09:18:55,958 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 09:18:55,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:18:55,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 09:18:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-10-29 09:18:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 09:18:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-29 09:18:55,974 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 46 [2020-10-29 09:18:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:18:55,975 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-29 09:18:55,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:18:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-29 09:18:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:18:55,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:18:55,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:18:55,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:18:55,977 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:18:55,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:18:55,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1525022366, now seen corresponding path program 1 times [2020-10-29 09:18:55,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:18:55,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518453579] [2020-10-29 09:18:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:18:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:57,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:18:57,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:18:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1926 [2020-10-29 09:18:57,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:57,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:18:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:18:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:18:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:18:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:58,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:58,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:58,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 09:18:58,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:58,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:18:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:18:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:18:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:58,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:58,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:18:58,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:18:58,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:58,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:18:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:18:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:58,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:18:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:58,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:18:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:58,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:18:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:18:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:18:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:58,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:58,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:18:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:18:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:58,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:18:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:18:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:18:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:58,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:18:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:58,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:18:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:18:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:18:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:18:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:18:58,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:58,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:18:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:18:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:18:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 09:18:58,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518453579] [2020-10-29 09:18:58,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:18:58,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:18:58,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716215598] [2020-10-29 09:18:58,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:18:58,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:18:58,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:18:58,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:18:58,475 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 16 states. [2020-10-29 09:18:59,198 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-29 09:18:59,555 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-29 09:18:59,680 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-29 09:19:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:00,083 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2020-10-29 09:19:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:19:00,084 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-29 09:19:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:00,086 INFO L225 Difference]: With dead ends: 109 [2020-10-29 09:19:00,087 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 09:19:00,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-10-29 09:19:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 09:19:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-29 09:19:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 09:19:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-10-29 09:19:00,112 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 46 [2020-10-29 09:19:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:00,112 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-10-29 09:19:00,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:19:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-10-29 09:19:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:19:00,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:00,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:19:00,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:19:00,115 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:00,115 INFO L82 PathProgramCache]: Analyzing trace with hash -499530367, now seen corresponding path program 1 times [2020-10-29 09:19:00,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:00,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499592057] [2020-10-29 09:19:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:00,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:00,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 09:19:00,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:00,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-29 09:19:00,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:00,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:19:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 09:19:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:19:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:19:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:00,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:00,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:00,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:00,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:19:00,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:00,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:19:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:19:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:00,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:19:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:19:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:00,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:00,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:00,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:00,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:19:00,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:00,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:19:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:19:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:19:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:00,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:00,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:00,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 09:19:00,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:00,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:19:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:19:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:00,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:01,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:19:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:01,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:19:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:19:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:19:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:01,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:01,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:01,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:19:01,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:01,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:19:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:19:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:19:01,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499592057] [2020-10-29 09:19:01,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:19:01,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:19:01,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340915303] [2020-10-29 09:19:01,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:19:01,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:01,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:19:01,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:19:01,181 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 22 states. [2020-10-29 09:19:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:02,451 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-10-29 09:19:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:19:02,452 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-10-29 09:19:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:02,454 INFO L225 Difference]: With dead ends: 70 [2020-10-29 09:19:02,454 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 09:19:02,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:19:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 09:19:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-10-29 09:19:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:19:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-29 09:19:02,482 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 46 [2020-10-29 09:19:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:02,482 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-29 09:19:02,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:19:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-29 09:19:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:19:02,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:02,492 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:19:02,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:19:02,492 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:02,493 INFO L82 PathProgramCache]: Analyzing trace with hash 156441139, now seen corresponding path program 1 times [2020-10-29 09:19:02,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:02,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930646239] [2020-10-29 09:19:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:19:07,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:19:07,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:19:07,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:19:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:19:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 09:19:07,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:07,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:19:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:19:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:19:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:19:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:07,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:19:07,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:19:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:19:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:07,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:19:07,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:19:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:07,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:19:07,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:19:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:19:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:19:07,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:19:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:07,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:19:07,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:19:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:19:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:19:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:07,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:19:07,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:19:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:19:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 09:19:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:07,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:07,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:07,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:19:07,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:07,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:19:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:19:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 09:19:07,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930646239] [2020-10-29 09:19:07,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:19:07,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:19:07,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010253158] [2020-10-29 09:19:07,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:19:07,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:19:07,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:19:07,861 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 12 states. [2020-10-29 09:19:08,284 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-29 09:19:08,436 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-29 09:19:08,761 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-29 09:19:08,896 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-29 09:19:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:09,086 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-29 09:19:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:19:09,087 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-29 09:19:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:09,090 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:19:09,091 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 09:19:09,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:19:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 09:19:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-29 09:19:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:19:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 09:19:09,117 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 58 [2020-10-29 09:19:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:09,118 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 09:19:09,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:19:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 09:19:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:19:09,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:09,122 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:19:09,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:19:09,122 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 836499509, now seen corresponding path program 1 times [2020-10-29 09:19:09,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:09,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521216423] [2020-10-29 09:19:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:09,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:19:14,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:19:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 09:19:14,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 09:19:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 09:19:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:19:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:14,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:19:14,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:19:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:14,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:19:14,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:19:14,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:14,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:19:14,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:19:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:19:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:14,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 09:19:14,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:19:14,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:14,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:19:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:14,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:19:14,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:19:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:19:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:19:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:14,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:19:14,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:19:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:19:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:19:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:14,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:19:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:19:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:19:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 09:19:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:14,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:14,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:19:14,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:14,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:14,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:19:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:19:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:19:14,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521216423] [2020-10-29 09:19:14,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:19:14,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:19:14,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993661660] [2020-10-29 09:19:14,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:19:14,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:14,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:19:14,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:19:14,706 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 23 states. [2020-10-29 09:19:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:15,963 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-10-29 09:19:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:19:15,964 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 58 [2020-10-29 09:19:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:15,965 INFO L225 Difference]: With dead ends: 63 [2020-10-29 09:19:15,965 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 09:19:15,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:19:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 09:19:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-29 09:19:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 09:19:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-10-29 09:19:15,976 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 58 [2020-10-29 09:19:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:15,977 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-10-29 09:19:15,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:19:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-10-29 09:19:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:19:15,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:15,978 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:19:15,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:19:15,978 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash -174617741, now seen corresponding path program 1 times [2020-10-29 09:19:15,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:15,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217366610] [2020-10-29 09:19:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 09:19:17,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:19:17,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-29 09:19:17,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:19:17,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 09:19:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:19:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:17,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:19:17,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:19:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:19:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:17,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:19:17,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:17,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:19:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:19:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:19:17,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:17,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:19:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:19:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 09:19:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:17,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:19:17,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:19:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:19:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 09:19:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 09:19:17,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:19:17,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:19:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:19:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 09:19:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:17,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:17,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:19:17,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:17,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:19:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:19:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:19:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 09:19:17,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217366610] [2020-10-29 09:19:17,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:19:17,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:19:17,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556425005] [2020-10-29 09:19:17,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:19:17,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:17,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:19:17,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:19:17,435 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 10 states. [2020-10-29 09:19:17,783 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-29 09:19:17,913 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 09:19:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:17,920 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-10-29 09:19:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:19:17,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-29 09:19:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:17,923 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:19:17,923 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:19:17,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:19:17,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:19:17,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:19:17,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:19:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:19:17,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-10-29 09:19:17,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:17,925 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:19:17,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:19:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:19:17,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:19:17,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:19:17,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:19:18,329 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 22 [2020-10-29 09:19:18,979 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-29 09:19:19,059 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:19:19,059 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:19:19,059 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:19:19,059 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:19:19,060 INFO L270 CegarLoopResult]: At program point L881(line 881) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= my_malloc_~size 8)) (not (= |my_malloc_#in~size| 8)) (not (= ~elem~0.offset 0)) (not (= ~elem~0.base 0))) [2020-10-29 09:19:19,060 INFO L274 CegarLoopResult]: For program point my_mallocFINAL(lines 880 882) no Hoare annotation was computed. [2020-10-29 09:19:19,060 INFO L274 CegarLoopResult]: For program point L881-1(line 881) no Hoare annotation was computed. [2020-10-29 09:19:19,060 INFO L270 CegarLoopResult]: At program point my_mallocENTRY(lines 880 882) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= |my_malloc_#in~size| 8)) (not (= ~elem~0.offset 0)) (not (= ~elem~0.base 0))) [2020-10-29 09:19:19,060 INFO L274 CegarLoopResult]: For program point my_mallocEXIT(lines 880 882) no Hoare annotation was computed. [2020-10-29 09:19:19,060 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:19:19,060 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.base |old(~elem~0.base)|)) [2020-10-29 09:19:19,061 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:19:19,061 INFO L274 CegarLoopResult]: For program point L898-2(lines 897 900) no Hoare annotation was computed. [2020-10-29 09:19:19,061 INFO L274 CegarLoopResult]: For program point list_delEXIT(lines 897 900) no Hoare annotation was computed. [2020-10-29 09:19:19,061 INFO L270 CegarLoopResult]: At program point list_delENTRY(lines 897 900) the Hoare annotation is: (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)) [2020-10-29 09:19:19,061 INFO L274 CegarLoopResult]: For program point L898(lines 898 899) no Hoare annotation was computed. [2020-10-29 09:19:19,061 INFO L270 CegarLoopResult]: At program point list_addENTRY(lines 891 895) the Hoare annotation is: (let ((.cse0 (= |old(~elem~0.base)| ~elem~0.base))) (and (or (and .cse0 (= |old(~elem~0.offset)| ~elem~0.offset)) (= |old(~elem~0.offset)| |list_add_#in~new.offset|)) (or (not (= |old(~elem~0.base)| 0)) (= |old(~elem~0.base)| |list_add_#in~new.base|) (not (= |old(~elem~0.offset)| 0)) (and (= ~elem~0.offset 0) .cse0)))) [2020-10-29 09:19:19,061 INFO L274 CegarLoopResult]: For program point L893(lines 893 894) no Hoare annotation was computed. [2020-10-29 09:19:19,061 INFO L274 CegarLoopResult]: For program point L892(line 892) no Hoare annotation was computed. [2020-10-29 09:19:19,062 INFO L274 CegarLoopResult]: For program point L893-2(lines 891 895) no Hoare annotation was computed. [2020-10-29 09:19:19,062 INFO L270 CegarLoopResult]: At program point L892-2(line 892) the Hoare annotation is: (and (or (not (= |old(~elem~0.base)| 0)) (= |old(~elem~0.base)| |list_add_#in~new.base|) (not (= |old(~elem~0.offset)| 0))) (= |old(~elem~0.offset)| |list_add_#in~new.offset|)) [2020-10-29 09:19:19,062 INFO L274 CegarLoopResult]: For program point L892-3(line 892) no Hoare annotation was computed. [2020-10-29 09:19:19,062 INFO L274 CegarLoopResult]: For program point list_addEXIT(lines 891 895) no Hoare annotation was computed. [2020-10-29 09:19:19,062 INFO L274 CegarLoopResult]: For program point __blast_assertEXIT(lines 6 9) no Hoare annotation was computed. [2020-10-29 09:19:19,062 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-29 09:19:19,062 INFO L274 CegarLoopResult]: For program point __blast_assertFINAL(lines 6 9) no Hoare annotation was computed. [2020-10-29 09:19:19,062 INFO L277 CegarLoopResult]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2020-10-29 09:19:19,062 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:19:19,063 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~elem~0.offset 0) (= ~elem~0.base 0)) [2020-10-29 09:19:19,063 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:19:19,063 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:19:19,063 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 904 919) the Hoare annotation is: (or (not (= |old(~elem~0.base)| 0)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0))) [2020-10-29 09:19:19,063 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 904 919) no Hoare annotation was computed. [2020-10-29 09:19:19,063 INFO L270 CegarLoopResult]: At program point L911(line 911) the Hoare annotation is: (let ((.cse0 (not (= main_~dev2~0.offset ~elem~0.offset)))) (or (and (= ~elem~0.offset 0) (= ~elem~0.base 0) (or (not (= main_~dev2~0.base ~elem~0.base)) .cse0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (not (= main_~dev2~0.offset main_~dev1~0.offset)) .cse0 (or (not (= main_~dev2~0.offset 0)) (not (= main_~dev2~0.base 0)))) (not (= |old(~elem~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)))) [2020-10-29 09:19:19,063 INFO L270 CegarLoopResult]: At program point L910(line 910) the Hoare annotation is: (let ((.cse1 (not (= main_~dev2~0.offset ~elem~0.offset))) (.cse2 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (not (= main_~dev2~0.offset main_~dev1~0.offset))) (.cse0 (= main_~dev2~0.base ~elem~0.base)) (.cse4 (or (not (= main_~dev2~0.offset 0)) (not (= main_~dev2~0.base 0))))) (or (and (= ~elem~0.offset 0) (= ~elem~0.base 0) (or (not .cse0) .cse1)) (and .cse2 .cse3 .cse1 .cse4) (and .cse2 .cse3 .cse0 .cse4) (not (= |old(~elem~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)))) [2020-10-29 09:19:19,064 INFO L270 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (or (not (= |old(~elem~0.base)| 0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (not (= main_~dev2~0.offset main_~dev1~0.offset)) (or (not (= ~elem~0.base main_~dev1~0.base)) (not (= main_~dev1~0.offset ~elem~0.offset))) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) (or (not (= main_~dev2~0.base ~elem~0.base)) (not (= main_~dev2~0.offset ~elem~0.offset)))) (not (= |old(~elem~0.offset)| 0))) [2020-10-29 09:19:19,064 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 904 919) no Hoare annotation was computed. [2020-10-29 09:19:19,064 INFO L274 CegarLoopResult]: For program point L908(lines 908 917) no Hoare annotation was computed. [2020-10-29 09:19:19,064 INFO L270 CegarLoopResult]: At program point L909-1(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (not (= main_~dev1~0.offset ~elem~0.offset))) (.cse2 (= main_~dev2~0.base ~elem~0.base)) (.cse3 (= main_~dev2~0.offset ~elem~0.offset))) (or (and .cse0 .cse1 .cse2 (or (not (= main_~dev2~0.offset 0)) (not (= main_~dev2~0.base 0))) .cse3) (not (= |old(~elem~0.base)| 0)) (and .cse0 (not (= main_~dev2~0.offset main_~dev1~0.offset)) (or (not (= ~elem~0.base main_~dev1~0.base)) .cse1) (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset) (or (not .cse2) (not .cse3))) (not (= |old(~elem~0.offset)| 0)))) [2020-10-29 09:19:19,064 INFO L270 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (let ((.cse0 (= |old(~elem~0.base)| ~elem~0.base)) (.cse1 (= |old(~elem~0.offset)| ~elem~0.offset))) (or (and (= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) .cse0 .cse1) (not (= |old(~elem~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (and (= ~elem~0.base main_~dev1~0.base) (= main_~dev1~0.offset ~elem~0.offset) .cse0 .cse1))) [2020-10-29 09:19:19,064 INFO L274 CegarLoopResult]: For program point L908-1(lines 908 917) no Hoare annotation was computed. [2020-10-29 09:19:19,065 INFO L270 CegarLoopResult]: At program point L906(line 906) the Hoare annotation is: (or (not (= |old(~elem~0.base)| 0)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0))) [2020-10-29 09:19:19,065 INFO L274 CegarLoopResult]: For program point L907-1(line 907) no Hoare annotation was computed. [2020-10-29 09:19:19,065 INFO L274 CegarLoopResult]: For program point L906-1(line 906) no Hoare annotation was computed. [2020-10-29 09:19:19,065 INFO L270 CegarLoopResult]: At program point __getMemoryENTRY(lines 871 878) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.offset 0)) (not (= ~elem~0.base 0))) [2020-10-29 09:19:19,065 INFO L274 CegarLoopResult]: For program point __getMemoryEXIT(lines 871 878) no Hoare annotation was computed. [2020-10-29 09:19:19,065 INFO L274 CegarLoopResult]: For program point __getMemoryFINAL(lines 871 878) no Hoare annotation was computed. [2020-10-29 09:19:19,065 INFO L274 CegarLoopResult]: For program point L875(lines 875 876) no Hoare annotation was computed. [2020-10-29 09:19:19,065 INFO L274 CegarLoopResult]: For program point L873(line 873) no Hoare annotation was computed. [2020-10-29 09:19:19,065 INFO L270 CegarLoopResult]: At program point L873-2(line 873) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2020-10-29 09:19:19,065 INFO L274 CegarLoopResult]: For program point L873-3(line 873) no Hoare annotation was computed. [2020-10-29 09:19:19,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:19:19 BoogieIcfgContainer [2020-10-29 09:19:19,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:19:19,073 INFO L168 Benchmark]: Toolchain (without parser) took 37649.00 ms. Allocated memory was 151.0 MB in the beginning and 406.8 MB in the end (delta: 255.9 MB). Free memory was 125.5 MB in the beginning and 351.3 MB in the end (delta: -225.8 MB). Peak memory consumption was 238.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:19,074 INFO L168 Benchmark]: CDTParser took 1.66 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 124.0 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:19:19,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.15 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 132.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:19,075 INFO L168 Benchmark]: Boogie Preprocessor took 105.01 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 130.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:19,076 INFO L168 Benchmark]: RCFGBuilder took 743.25 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 87.1 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:19,077 INFO L168 Benchmark]: TraceAbstraction took 36161.63 ms. Allocated memory was 151.0 MB in the beginning and 406.8 MB in the end (delta: 255.9 MB). Free memory was 86.6 MB in the beginning and 351.3 MB in the end (delta: -264.7 MB). Peak memory consumption was 198.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:19,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.66 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 124.0 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 624.15 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 132.7 MB in the end (delta: -7.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.01 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 130.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 743.25 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 87.1 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 36161.63 ms. Allocated memory was 151.0 MB in the beginning and 406.8 MB in the end (delta: 255.9 MB). Free memory was 86.6 MB in the beginning and 351.3 MB in the end (delta: -264.7 MB). Peak memory consumption was 198.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 297 SDtfs, 442 SDslu, 707 SDs, 0 SdLazy, 3407 SolverSat, 323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 85 PreInvPairs, 96 NumberOfFragments, 499 HoareAnnotationTreeSize, 85 FomulaSimplifications, 346 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 19 FomulaSimplificationsInter, 742 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 25.5s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 357 ConstructedInterpolants, 0 QuantifiedInterpolants, 85246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 78/113 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...