/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 [2020-10-28 14:38:23,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:38:23,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:38:23,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:38:23,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:38:23,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:38:23,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:38:23,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:38:23,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:38:23,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:38:23,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:38:23,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:38:23,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:38:23,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:38:23,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:38:23,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:38:23,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:38:23,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:38:23,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:38:23,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:38:23,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:38:23,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:38:23,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:38:23,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:38:23,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:38:23,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:38:23,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:38:23,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:38:23,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:38:23,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:38:23,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:38:23,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:38:23,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:38:23,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:38:23,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:38:23,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:38:23,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:38:23,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:38:23,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:38:23,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:38:23,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:38:23,801 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 [2020-10-28 14:38:23,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:38:23,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:38:23,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:38:23,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:38:23,863 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:38:23,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:38:23,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:38:23,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:38:23,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:38:23,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:38:23,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:38:23,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:38:23,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:38:23,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:38:23,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:38:23,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:38:23,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:38:23,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:38:23,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:38:23,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:38:23,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:38:23,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:38:23,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:38:23,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:38:23,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:38:23,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:38:23,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:38:23,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:38:23,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:38:23,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:38:24,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:38:24,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:38:24,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:38:24,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:38:24,356 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:38:24,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-10-28 14:38:24,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f7bf2333/8f679b3e574349a58d9c977d0846da6b/FLAG7939266e3 [2020-10-28 14:38:25,137 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:38:25,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-10-28 14:38:25,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f7bf2333/8f679b3e574349a58d9c977d0846da6b/FLAG7939266e3 [2020-10-28 14:38:25,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f7bf2333/8f679b3e574349a58d9c977d0846da6b [2020-10-28 14:38:25,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:38:25,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:38:25,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:38:25,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:38:25,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:38:25,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:38:25" (1/1) ... [2020-10-28 14:38:25,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642ef50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:25, skipping insertion in model container [2020-10-28 14:38:25,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:38:25" (1/1) ... [2020-10-28 14:38:25,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:38:25,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:38:25,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:38:25,875 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:38:25,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:38:26,076 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:38:26,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26 WrapperNode [2020-10-28 14:38:26,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:38:26,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:38:26,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:38:26,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:38:26,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (1/1) ... [2020-10-28 14:38:26,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (1/1) ... [2020-10-28 14:38:26,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (1/1) ... [2020-10-28 14:38:26,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (1/1) ... [2020-10-28 14:38:26,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (1/1) ... [2020-10-28 14:38:26,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (1/1) ... [2020-10-28 14:38:26,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (1/1) ... [2020-10-28 14:38:26,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:38:26,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:38:26,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:38:26,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:38:26,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (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 [2020-10-28 14:38:26,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:38:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:38:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:38:26,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-28 14:38:26,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-10-28 14:38:26,350 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-10-28 14:38:26,350 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-28 14:38:26,351 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-10-28 14:38:26,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:38:26,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:38:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:38:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:38:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:38:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-28 14:38:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-28 14:38:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-28 14:38:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-28 14:38:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-28 14:38:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-28 14:38:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-28 14:38:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-28 14:38:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-28 14:38:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-28 14:38:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-28 14:38:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-28 14:38:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-28 14:38:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-28 14:38:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-28 14:38:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-28 14:38:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-28 14:38:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-28 14:38:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-28 14:38:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-28 14:38:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-28 14:38:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-28 14:38:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-28 14:38:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-28 14:38:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-28 14:38:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-28 14:38:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-28 14:38:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-28 14:38:26,358 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-28 14:38:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-28 14:38:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-28 14:38:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-28 14:38:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-28 14:38:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-28 14:38:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-28 14:38:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-28 14:38:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-28 14:38:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-28 14:38:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-28 14:38:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-28 14:38:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-28 14:38:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-28 14:38:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-28 14:38:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-28 14:38:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-28 14:38:26,362 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-28 14:38:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-28 14:38:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-28 14:38:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-28 14:38:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-28 14:38:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-28 14:38:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-28 14:38:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-28 14:38:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-28 14:38:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-28 14:38:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-28 14:38:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-28 14:38:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-28 14:38:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-28 14:38:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-28 14:38:26,367 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-28 14:38:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-28 14:38:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-28 14:38:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-28 14:38:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-28 14:38:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-28 14:38:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-28 14:38:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-28 14:38:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-28 14:38:26,369 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-28 14:38:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-28 14:38:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-28 14:38:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-28 14:38:26,370 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-28 14:38:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-28 14:38:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-28 14:38:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-28 14:38:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-28 14:38:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-28 14:38:26,371 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-28 14:38:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-28 14:38:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-28 14:38:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-28 14:38:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-28 14:38:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-28 14:38:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-28 14:38:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-28 14:38:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-28 14:38:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-28 14:38:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-28 14:38:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-28 14:38:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-28 14:38:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-28 14:38:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-28 14:38:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-28 14:38:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-28 14:38:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-28 14:38:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-28 14:38:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-28 14:38:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-28 14:38:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-28 14:38:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-28 14:38:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:38:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:38:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:38:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:38:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:38:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-10-28 14:38:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:38:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-10-28 14:38:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-10-28 14:38:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-10-28 14:38:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-10-28 14:38:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-10-28 14:38:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-10-28 14:38:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-10-28 14:38:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-10-28 14:38:26,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-10-28 14:38:26,382 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-10-28 14:38:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-10-28 14:38:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:38:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-10-28 14:38:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-10-28 14:38:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-28 14:38:26,386 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-10-28 14:38:26,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:38:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:38:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:38:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 14:38:26,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:38:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:38:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:38:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:38:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:38:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:38:27,165 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:38:27,166 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:38:27,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:38:27 BoogieIcfgContainer [2020-10-28 14:38:27,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:38:27,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:38:27,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:38:27,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:38:27,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:38:25" (1/3) ... [2020-10-28 14:38:27,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f206029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:38:27, skipping insertion in model container [2020-10-28 14:38:27,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:26" (2/3) ... [2020-10-28 14:38:27,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f206029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:38:27, skipping insertion in model container [2020-10-28 14:38:27,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:38:27" (3/3) ... [2020-10-28 14:38:27,177 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-10-28 14:38:27,189 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:38:27,194 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:38:27,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:38:27,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:38:27,237 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:38:27,237 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:38:27,237 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:38:27,237 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:38:27,237 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:38:27,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:38:27,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:38:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-28 14:38:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 14:38:27,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:27,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:38:27,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:27,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1013982880, now seen corresponding path program 1 times [2020-10-28 14:38:27,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:27,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063852970] [2020-10-28 14:38:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:27,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:27,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:27,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 14:38:27,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:27,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-28 14:38:27,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:27,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:38:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:38:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:38:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:28,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:38:28,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:28,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:38:28,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063852970] [2020-10-28 14:38:28,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:28,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:38:28,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373000063] [2020-10-28 14:38:28,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:38:28,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:38:28,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:38:28,178 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 7 states. [2020-10-28 14:38:28,562 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-28 14:38:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:28,958 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-10-28 14:38:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:38:28,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-28 14:38:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:28,971 INFO L225 Difference]: With dead ends: 93 [2020-10-28 14:38:28,971 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:38:28,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:38:28,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:38:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-28 14:38:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 14:38:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-28 14:38:29,027 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 14 [2020-10-28 14:38:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:29,027 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-28 14:38:29,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:38:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-28 14:38:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:38:29,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:29,030 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] [2020-10-28 14:38:29,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:38:29,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:29,031 INFO L82 PathProgramCache]: Analyzing trace with hash -709310003, now seen corresponding path program 1 times [2020-10-28 14:38:29,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:29,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242285400] [2020-10-28 14:38:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 14:38:34,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:38:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 14:38:34,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:38:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 14:38:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:34,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:34,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:38:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:38:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:34,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:38:34,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:38:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:34,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:34,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:34,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:38:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:34,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:38:34,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:38:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:34,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:34,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:34,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:34,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:34,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:34,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:34,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:34,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 14:38:34,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242285400] [2020-10-28 14:38:34,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:34,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 14:38:34,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257384595] [2020-10-28 14:38:34,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:38:34,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:38:34,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:38:34,396 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-28 14:38:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:35,184 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-10-28 14:38:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:38:35,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-28 14:38:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:35,187 INFO L225 Difference]: With dead ends: 72 [2020-10-28 14:38:35,187 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:38:35,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:38:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:38:35,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-10-28 14:38:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 14:38:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-28 14:38:35,204 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 39 [2020-10-28 14:38:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:35,205 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-28 14:38:35,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:38:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-28 14:38:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:38:35,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:35,207 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] [2020-10-28 14:38:35,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:38:35,207 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:35,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:35,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1736373279, now seen corresponding path program 1 times [2020-10-28 14:38:35,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:35,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52304139] [2020-10-28 14:38:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:38,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:38:38,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:38:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2988 [2020-10-28 14:38:38,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:38,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:38:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:38:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 14:38:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:38,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:38,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:38:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:38,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:38,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:38,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:38,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:38:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:38,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:38:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:38:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:38,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:38,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:38:38,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:38,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:38,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:38:38,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:38:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:38,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:38,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:38:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:38,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:38:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:38,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:38,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:38,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:38:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:38,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:38,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:38,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:38,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:38,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:38:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 14:38:38,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52304139] [2020-10-28 14:38:38,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:38,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:38:38,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760342188] [2020-10-28 14:38:38,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:38:38,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:38,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:38:38,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:38:38,717 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 10 states. [2020-10-28 14:38:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:39,226 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2020-10-28 14:38:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:38:39,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-28 14:38:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:39,229 INFO L225 Difference]: With dead ends: 99 [2020-10-28 14:38:39,229 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 14:38:39,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:38:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 14:38:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-28 14:38:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 14:38:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-28 14:38:39,264 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 46 [2020-10-28 14:38:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:39,264 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-28 14:38:39,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:38:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-28 14:38:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:38:39,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:39,270 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] [2020-10-28 14:38:39,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:38:39,270 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash -710881280, now seen corresponding path program 1 times [2020-10-28 14:38:39,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:39,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444169118] [2020-10-28 14:38:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:38:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:38:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-28 14:38:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:38:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 14:38:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:38:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:40,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:38:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:40,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:40,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:40,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:40,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:38:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:40,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:38:40,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:38:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:40,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:38:40,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:38:40,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:38:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:40,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:40,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 14:38:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 14:38:41,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444169118] [2020-10-28 14:38:41,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:41,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 14:38:41,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845031764] [2020-10-28 14:38:41,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:38:41,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:41,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:38:41,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:38:41,014 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 10 states. [2020-10-28 14:38:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:41,401 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-10-28 14:38:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:38:41,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-28 14:38:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:41,403 INFO L225 Difference]: With dead ends: 97 [2020-10-28 14:38:41,403 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 14:38:41,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:38:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 14:38:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-28 14:38:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 14:38:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-10-28 14:38:41,417 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 46 [2020-10-28 14:38:41,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:41,417 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-10-28 14:38:41,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:38:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-10-28 14:38:41,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:38:41,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:41,419 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] [2020-10-28 14:38:41,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:38:41,419 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:41,420 INFO L82 PathProgramCache]: Analyzing trace with hash -499530367, now seen corresponding path program 1 times [2020-10-28 14:38:41,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:41,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234327071] [2020-10-28 14:38:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:41,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:41,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:38:41,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-28 14:38:41,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:41,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 14:38:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:38:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 14:38:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:41,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:38:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:41,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:42,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:42,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:42,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:38:42,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:42,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:38:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:42,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:42,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:42,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:38:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:42,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:38:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:42,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:38:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:42,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:42,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:42,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:42,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:38:42,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:42,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:42,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:38:42,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:38:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:42,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:42,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:42,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:38:42,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:42,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:42,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:38:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:38:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:42,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:38:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:42,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:42,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:42,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:38:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:42,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:38:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:38:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:38:42,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234327071] [2020-10-28 14:38:42,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:42,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 14:38:42,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394749160] [2020-10-28 14:38:42,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 14:38:42,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:42,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 14:38:42,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-28 14:38:42,408 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 22 states. [2020-10-28 14:38:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:43,930 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-28 14:38:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 14:38:43,931 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-10-28 14:38:43,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:43,933 INFO L225 Difference]: With dead ends: 68 [2020-10-28 14:38:43,933 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 14:38:43,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 14:38:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 14:38:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-28 14:38:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 14:38:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-10-28 14:38:43,964 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 46 [2020-10-28 14:38:43,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:43,966 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-10-28 14:38:43,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 14:38:43,966 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-10-28 14:38:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 14:38:43,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:43,969 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] [2020-10-28 14:38:43,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:38:43,969 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash 180528003, now seen corresponding path program 1 times [2020-10-28 14:38:43,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:43,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35983181] [2020-10-28 14:38:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:43,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:44,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 14:38:44,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:38:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-28 14:38:44,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:44,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 14:38:44,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:38:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 14:38:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:44,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:44,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:44,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:38:44,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:44,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:44,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:44,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:44,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:38:44,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:44,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:38:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:44,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:44,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:44,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:44,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:38:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:44,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:44,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:38:44,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:44,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:38:44,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:44,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:44,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:44,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:44,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:44,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:38:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:44,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:44,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:44,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:38:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:44,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:38:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:38:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 14:38:44,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35983181] [2020-10-28 14:38:44,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:44,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:38:44,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018453105] [2020-10-28 14:38:44,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:38:44,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:44,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:38:44,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:38:44,800 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 9 states. [2020-10-28 14:38:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:45,508 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-10-28 14:38:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:38:45,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-28 14:38:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:45,511 INFO L225 Difference]: With dead ends: 70 [2020-10-28 14:38:45,513 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 14:38:45,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:38:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 14:38:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-28 14:38:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 14:38:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-28 14:38:45,531 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 46 [2020-10-28 14:38:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:45,532 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-28 14:38:45,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:38:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-28 14:38:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:38:45,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:45,539 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] [2020-10-28 14:38:45,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:38:45,539 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:45,540 INFO L82 PathProgramCache]: Analyzing trace with hash 156441139, now seen corresponding path program 1 times [2020-10-28 14:38:45,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:45,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292837799] [2020-10-28 14:38:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:45,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 14:38:50,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:38:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 14:38:50,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:38:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 14:38:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 14:38:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:50,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:50,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:50,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:50,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:50,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:50,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:50,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:38:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:50,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:50,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:38:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:50,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:50,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:38:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:38:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:38:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 14:38:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:50,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:38:50,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:50,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:38:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 14:38:50,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292837799] [2020-10-28 14:38:50,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:50,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:38:50,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310645054] [2020-10-28 14:38:50,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:38:50,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:50,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:38:50,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:38:50,930 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 10 states. [2020-10-28 14:38:51,392 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-28 14:38:51,570 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-28 14:38:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:51,727 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-28 14:38:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 14:38:51,727 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-28 14:38:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:51,729 INFO L225 Difference]: With dead ends: 64 [2020-10-28 14:38:51,729 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:38:51,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-28 14:38:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:38:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-28 14:38:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 14:38:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 14:38:51,756 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 58 [2020-10-28 14:38:51,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:51,757 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 14:38:51,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:38:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 14:38:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:38:51,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:51,761 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] [2020-10-28 14:38:51,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:38:51,763 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:51,764 INFO L82 PathProgramCache]: Analyzing trace with hash 836499509, now seen corresponding path program 1 times [2020-10-28 14:38:51,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:51,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116636918] [2020-10-28 14:38:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 14:38:56,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:38:56,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4885 [2020-10-28 14:38:56,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:38:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 14:38:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:38:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:56,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:38:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:56,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:56,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:56,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 14:38:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:38:56,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:38:56,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:56,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:38:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:56,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:56,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:56,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 14:38:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:38:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 14:38:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:38:56,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:38:56,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:56,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 14:38:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:56,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:56,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:56,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:38:56,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:56,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:38:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:38:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:38:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 14:38:56,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116636918] [2020-10-28 14:38:56,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:38:56,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:38:56,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288855894] [2020-10-28 14:38:56,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:38:56,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:56,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:38:56,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:38:56,944 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-28 14:38:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:57,462 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-10-28 14:38:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:38:57,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-28 14:38:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:57,463 INFO L225 Difference]: With dead ends: 55 [2020-10-28 14:38:57,463 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:38:57,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-28 14:38:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:38:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:38:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:38:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:38:57,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-10-28 14:38:57,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:57,465 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:38:57,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:38:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:38:57,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:38:57,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:38:57,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:38:57,813 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 13 [2020-10-28 14:38:58,112 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 21 [2020-10-28 14:38:58,627 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-28 14:38:58,719 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 14:38:58,720 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 14:38:58,720 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 14:38:58,720 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 14:38:58,720 INFO L270 CegarLoopResult]: At program point L881(line 881) the Hoare annotation is: (or (not (= ~elem~0.base ~elem~0.offset)) (not (= |my_malloc_#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)|) (= my_malloc_~size 8)) (not (= ~elem~0.offset 0))) [2020-10-28 14:38:58,720 INFO L274 CegarLoopResult]: For program point my_mallocFINAL(lines 880 882) no Hoare annotation was computed. [2020-10-28 14:38:58,721 INFO L274 CegarLoopResult]: For program point L881-1(line 881) no Hoare annotation was computed. [2020-10-28 14:38:58,721 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))) [2020-10-28 14:38:58,721 INFO L274 CegarLoopResult]: For program point my_mallocEXIT(lines 880 882) no Hoare annotation was computed. [2020-10-28 14:38:58,721 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:38:58,721 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)|)) [2020-10-28 14:38:58,721 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:38:58,722 INFO L274 CegarLoopResult]: For program point L898-2(lines 897 900) no Hoare annotation was computed. [2020-10-28 14:38:58,722 INFO L274 CegarLoopResult]: For program point list_delEXIT(lines 897 900) no Hoare annotation was computed. [2020-10-28 14:38:58,722 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)) [2020-10-28 14:38:58,722 INFO L274 CegarLoopResult]: For program point L898(lines 898 899) no Hoare annotation was computed. [2020-10-28 14:38:58,722 INFO L270 CegarLoopResult]: At program point list_addENTRY(lines 891 895) the Hoare annotation is: (or (and (= |old(~elem~0.base)| |list_add_#in~new.base|) (= |old(~elem~0.offset)| |list_add_#in~new.offset|)) (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset))) [2020-10-28 14:38:58,722 INFO L274 CegarLoopResult]: For program point L893(lines 893 894) no Hoare annotation was computed. [2020-10-28 14:38:58,722 INFO L274 CegarLoopResult]: For program point L892(line 892) no Hoare annotation was computed. [2020-10-28 14:38:58,722 INFO L274 CegarLoopResult]: For program point L893-2(lines 891 895) no Hoare annotation was computed. [2020-10-28 14:38:58,723 INFO L270 CegarLoopResult]: At program point L892-2(line 892) the Hoare annotation is: (and (= |old(~elem~0.base)| |list_add_#in~new.base|) (= |old(~elem~0.offset)| |list_add_#in~new.offset|)) [2020-10-28 14:38:58,723 INFO L274 CegarLoopResult]: For program point L892-3(line 892) no Hoare annotation was computed. [2020-10-28 14:38:58,723 INFO L274 CegarLoopResult]: For program point list_addEXIT(lines 891 895) no Hoare annotation was computed. [2020-10-28 14:38:58,723 INFO L274 CegarLoopResult]: For program point __blast_assertEXIT(lines 6 9) no Hoare annotation was computed. [2020-10-28 14:38:58,723 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-28 14:38:58,723 INFO L274 CegarLoopResult]: For program point __blast_assertFINAL(lines 6 9) no Hoare annotation was computed. [2020-10-28 14:38:58,723 INFO L277 CegarLoopResult]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2020-10-28 14:38:58,723 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:38:58,724 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~elem~0.offset 0) (= ~elem~0.base 0)) [2020-10-28 14:38:58,724 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:38:58,724 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:38:58,724 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 904 919) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| |old(~elem~0.base)|)) (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))) [2020-10-28 14:38:58,724 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 904 919) no Hoare annotation was computed. [2020-10-28 14:38:58,724 INFO L270 CegarLoopResult]: At program point L911(line 911) the Hoare annotation is: (let ((.cse0 (or (not (= main_~dev2~0.base ~elem~0.base)) (not (= main_~dev2~0.offset ~elem~0.offset))))) (or (and (= ~elem~0.offset 0) (= ~elem~0.base 0) .cse0) (not (= |old(~elem~0.offset)| |old(~elem~0.base)|)) (not (= |old(~elem~0.offset)| 0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (not (= main_~dev2~0.offset main_~dev1~0.offset)) (or (<= (+ main_~dev2~0.offset 1) 0) (< 0 main_~dev2~0.offset) (not (= main_~dev2~0.base 0))) .cse0))) [2020-10-28 14:38:58,725 INFO L270 CegarLoopResult]: At program point L910(line 910) the Hoare annotation is: (or (and (= ~elem~0.offset 0) (= ~elem~0.base 0) (or (not (= main_~dev2~0.base ~elem~0.base)) (not (= main_~dev2~0.offset ~elem~0.offset)))) (not (= |old(~elem~0.offset)| |old(~elem~0.base)|)) (not (= |old(~elem~0.offset)| 0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (not (= main_~dev2~0.offset main_~dev1~0.offset)) (or (<= (+ main_~dev2~0.offset 1) 0) (< 0 main_~dev2~0.offset) (not (= main_~dev2~0.base 0))))) [2020-10-28 14:38:58,725 INFO L270 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (or (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 main_~dev2~0.offset)) (not (= main_~dev2~0.base 0)))) (not (= |old(~elem~0.offset)| |old(~elem~0.base)|)) (not (= |old(~elem~0.offset)| 0))) [2020-10-28 14:38:58,725 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 904 919) no Hoare annotation was computed. [2020-10-28 14:38:58,725 INFO L274 CegarLoopResult]: For program point L908(lines 908 917) no Hoare annotation was computed. [2020-10-28 14:38:58,725 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_~dev2~0.offset main_~dev1~0.offset))) (.cse2 (not (= main_~dev2~0.base 0)))) (or (and .cse0 (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 (= main_~dev2~0.base main_~dev2~0.offset)) .cse2)) (and .cse0 .cse1 (not (= main_~dev1~0.offset ~elem~0.offset)) (or (<= (+ main_~dev2~0.offset 1) 0) (< 0 main_~dev2~0.offset) .cse2)) (not (= |old(~elem~0.offset)| |old(~elem~0.base)|)) (not (= |old(~elem~0.offset)| 0)))) [2020-10-28 14:38:58,726 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.offset)| |old(~elem~0.base)|)) (and (<= main_~dev1~0.offset 0) (< 0 (+ main_~dev1~0.offset 1)) (<= main_~dev1~0.base 0) (< 0 (+ main_~dev1~0.base 1)) .cse0 .cse1) (not (= |old(~elem~0.offset)| 0)))) [2020-10-28 14:38:58,726 INFO L274 CegarLoopResult]: For program point L908-1(lines 908 917) no Hoare annotation was computed. [2020-10-28 14:38:58,726 INFO L270 CegarLoopResult]: At program point L906(line 906) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| |old(~elem~0.base)|)) (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))) [2020-10-28 14:38:58,726 INFO L274 CegarLoopResult]: For program point L907-1(line 907) no Hoare annotation was computed. [2020-10-28 14:38:58,726 INFO L274 CegarLoopResult]: For program point L906-1(line 906) no Hoare annotation was computed. [2020-10-28 14:38:58,726 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.base ~elem~0.offset)) (not (= ~elem~0.offset 0))) [2020-10-28 14:38:58,726 INFO L274 CegarLoopResult]: For program point __getMemoryEXIT(lines 871 878) no Hoare annotation was computed. [2020-10-28 14:38:58,727 INFO L274 CegarLoopResult]: For program point __getMemoryFINAL(lines 871 878) no Hoare annotation was computed. [2020-10-28 14:38:58,727 INFO L274 CegarLoopResult]: For program point L875(lines 875 876) no Hoare annotation was computed. [2020-10-28 14:38:58,727 INFO L274 CegarLoopResult]: For program point L873(line 873) no Hoare annotation was computed. [2020-10-28 14:38:58,727 INFO L270 CegarLoopResult]: At program point L873-2(line 873) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= ~elem~0.base ~elem~0.offset)) (not (= ~elem~0.offset 0))) [2020-10-28 14:38:58,727 INFO L274 CegarLoopResult]: For program point L873-3(line 873) no Hoare annotation was computed. [2020-10-28 14:38:58,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:38:58 BoogieIcfgContainer [2020-10-28 14:38:58,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:38:58,735 INFO L168 Benchmark]: Toolchain (without parser) took 33281.25 ms. Allocated memory was 125.8 MB in the beginning and 377.5 MB in the end (delta: 251.7 MB). Free memory was 100.6 MB in the beginning and 149.7 MB in the end (delta: -49.0 MB). Peak memory consumption was 203.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:58,736 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:38:58,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.86 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 75.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:58,737 INFO L168 Benchmark]: Boogie Preprocessor took 136.89 ms. Allocated memory is still 125.8 MB. Free memory was 75.6 MB in the beginning and 73.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:58,738 INFO L168 Benchmark]: RCFGBuilder took 950.31 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 72.8 MB in the beginning and 92.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:58,739 INFO L168 Benchmark]: TraceAbstraction took 31564.00 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 92.0 MB in the beginning and 149.7 MB in the end (delta: -57.7 MB). Peak memory consumption was 168.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:58,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 613.86 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 75.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 136.89 ms. Allocated memory is still 125.8 MB. Free memory was 75.6 MB in the beginning and 73.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 950.31 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 72.8 MB in the beginning and 92.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 31564.00 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 92.0 MB in the beginning and 149.7 MB in the end (delta: -57.7 MB). Peak memory consumption was 168.8 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: 30.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 314 SDtfs, 365 SDslu, 657 SDs, 0 SdLazy, 2262 SolverSat, 254 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4.3s 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, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 82 PreInvPairs, 92 NumberOfFragments, 468 HoareAnnotationTreeSize, 82 FomulaSimplifications, 290 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 19 FomulaSimplificationsInter, 1201 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 69292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 87/105 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...