/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:09:25,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:09:25,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:09:25,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:09:25,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:09:25,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:09:25,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:09:25,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:09:25,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:09:25,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:09:25,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:09:25,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:09:25,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:09:25,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:09:25,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:09:25,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:09:25,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:09:25,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:09:25,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:09:25,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:09:25,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:09:25,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:09:25,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:09:25,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:09:25,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:09:25,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:09:25,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:09:25,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:09:25,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:09:25,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:09:25,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:09:25,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:09:25,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:09:25,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:09:25,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:09:25,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:09:25,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:09:25,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:09:25,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:09:25,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:09:25,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:09:25,576 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 [2020-08-19 01:09:25,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:09:25,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:09:25,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:09:25,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:09:25,601 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:09:25,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:09:25,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:09:25,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:09:25,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:09:25,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:09:25,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:09:25,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:09:25,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:09:25,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:09:25,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:09:25,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:09:25,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:09:25,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:09:25,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:09:25,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:09:25,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:09:25,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:25,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:09:25,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:09:25,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:09:25,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:09:25,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:09:25,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:09:25,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:09:25,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:09:25,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:09:25,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:09:25,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:09:25,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:09:25,929 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:09:25,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 01:09:26,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161df6c60/5413a45716b3482c93ae49ba8f6a467d/FLAGcf2db1f69 [2020-08-19 01:09:26,522 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:09:26,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 01:09:26,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161df6c60/5413a45716b3482c93ae49ba8f6a467d/FLAGcf2db1f69 [2020-08-19 01:09:26,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161df6c60/5413a45716b3482c93ae49ba8f6a467d [2020-08-19 01:09:26,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:09:26,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:09:26,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:26,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:09:26,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:09:26,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:26" (1/1) ... [2020-08-19 01:09:26,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6afc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:26, skipping insertion in model container [2020-08-19 01:09:26,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:26" (1/1) ... [2020-08-19 01:09:26,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:09:26,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:09:27,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:27,591 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:09:27,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:27,804 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:09:27,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27 WrapperNode [2020-08-19 01:09:27,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:27,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:09:27,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:09:27,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:09:27,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:09:27,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:09:27,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:09:27,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:09:27,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (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 [2020-08-19 01:09:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:09:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:09:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:09:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 01:09:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 01:09:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 01:09:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 01:09:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 01:09:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 01:09:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 01:09:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 01:09:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 01:09:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 01:09:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 01:09:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 01:09:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 01:09:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 01:09:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 01:09:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 01:09:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 01:09:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 01:09:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:09:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:09:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 01:09:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 01:09:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 01:09:28,011 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 01:09:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 01:09:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 01:09:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 01:09:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 01:09:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 01:09:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 01:09:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 01:09:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 01:09:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 01:09:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 01:09:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 01:09:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 01:09:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 01:09:28,013 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 01:09:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 01:09:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 01:09:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 01:09:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 01:09:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 01:09:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 01:09:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 01:09:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 01:09:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 01:09:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 01:09:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 01:09:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 01:09:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 01:09:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 01:09:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 01:09:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 01:09:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 01:09:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 01:09:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 01:09:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 01:09:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 01:09:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 01:09:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 01:09:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 01:09:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 01:09:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 01:09:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 01:09:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 01:09:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 01:09:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 01:09:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 01:09:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 01:09:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 01:09:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 01:09:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:09:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 01:09:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 01:09:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:09:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 01:09:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 01:09:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 01:09:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 01:09:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 01:09:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:09:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 01:09:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 01:09:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 01:09:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 01:09:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 01:09:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 01:09:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 01:09:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 01:09:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 01:09:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 01:09:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 01:09:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 01:09:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 01:09:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 01:09:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 01:09:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 01:09:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 01:09:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 01:09:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 01:09:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 01:09:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 01:09:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 01:09:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 01:09:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 01:09:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 01:09:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 01:09:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 01:09:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 01:09:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 01:09:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 01:09:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 01:09:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 01:09:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 01:09:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 01:09:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 01:09:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 01:09:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 01:09:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 01:09:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 01:09:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 01:09:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 01:09:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 01:09:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 01:09:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:09:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 01:09:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 01:09:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:09:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:09:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 01:09:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 01:09:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:09:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 01:09:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:09:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:09:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 01:09:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:09:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 01:09:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 01:09:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 01:09:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 01:09:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 01:09:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 01:09:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 01:09:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 01:09:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 01:09:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 01:09:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 01:09:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:09:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:09:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:09:28,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:09:28,996 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 01:09:29,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:29 BoogieIcfgContainer [2020-08-19 01:09:29,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:09:29,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:09:29,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:09:29,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:09:29,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:09:26" (1/3) ... [2020-08-19 01:09:29,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76718f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:29, skipping insertion in model container [2020-08-19 01:09:29,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (2/3) ... [2020-08-19 01:09:29,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76718f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:29, skipping insertion in model container [2020-08-19 01:09:29,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:29" (3/3) ... [2020-08-19 01:09:29,014 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-19 01:09:29,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:09:29,029 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:09:29,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:09:29,061 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:09:29,061 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:09:29,061 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:09:29,061 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:09:29,061 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:09:29,061 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:09:29,062 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:09:29,062 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:09:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 01:09:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:09:29,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:29,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-08-19 01:09:29,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:29,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 01:09:29,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:29,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7833812] [2020-08-19 01:09:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 01:09:29,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7833812] [2020-08-19 01:09:29,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:29,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:09:29,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488940699] [2020-08-19 01:09:29,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:09:29,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:29,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:09:29,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:09:29,702 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 01:09:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:30,136 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 01:09:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:09:30,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:09:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:30,154 INFO L225 Difference]: With dead ends: 343 [2020-08-19 01:09:30,154 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 01:09:30,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 01:09:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 01:09:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 01:09:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 01:09:30,238 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 01:09:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:30,239 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 01:09:30,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:09:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 01:09:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:09:30,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:30,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2020-08-19 01:09:30,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:09:30,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:30,245 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 01:09:30,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:30,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464511152] [2020-08-19 01:09:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 01:09:30,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464511152] [2020-08-19 01:09:30,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:30,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:09:30,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719019142] [2020-08-19 01:09:30,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:09:30,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:30,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:09:30,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:09:30,706 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 01:09:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:31,989 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 01:09:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:09:31,990 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 01:09:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:31,994 INFO L225 Difference]: With dead ends: 327 [2020-08-19 01:09:31,994 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 01:09:31,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:09:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 01:09:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 01:09:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 01:09:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 01:09:32,026 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 01:09:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:32,027 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 01:09:32,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:09:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 01:09:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:09:32,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:32,031 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:09:32,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:09:32,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:32,031 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 01:09:32,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:32,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10420356] [2020-08-19 01:09:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 01:09:33,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10420356] [2020-08-19 01:09:33,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:33,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 01:09:33,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081614008] [2020-08-19 01:09:33,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 01:09:33,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:33,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 01:09:33,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:09:33,567 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-19 01:09:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:36,716 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-19 01:09:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:09:36,722 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 01:09:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:36,725 INFO L225 Difference]: With dead ends: 348 [2020-08-19 01:09:36,725 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 01:09:36,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 01:09:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 01:09:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-19 01:09:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 01:09:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-19 01:09:36,752 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-19 01:09:36,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:36,752 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-19 01:09:36,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 01:09:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-19 01:09:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:09:36,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:36,760 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:09:36,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:09:36,761 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:36,761 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 01:09:36,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:36,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096512293] [2020-08-19 01:09:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:36,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-19 01:09:38,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096512293] [2020-08-19 01:09:38,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:38,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 01:09:38,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618189468] [2020-08-19 01:09:38,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 01:09:38,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:38,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 01:09:38,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:09:38,035 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-19 01:09:40,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:40,406 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-19 01:09:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:09:40,407 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 01:09:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:40,410 INFO L225 Difference]: With dead ends: 360 [2020-08-19 01:09:40,410 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 01:09:40,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:09:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 01:09:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-19 01:09:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-19 01:09:40,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-19 01:09:40,433 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-19 01:09:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:40,434 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-19 01:09:40,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 01:09:40,434 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-19 01:09:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:09:40,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:40,438 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:09:40,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:09:40,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:40,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:40,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-19 01:09:40,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:40,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882079449] [2020-08-19 01:09:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:40,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-19 01:09:41,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882079449] [2020-08-19 01:09:41,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:41,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 01:09:41,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206544938] [2020-08-19 01:09:41,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 01:09:41,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:41,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 01:09:41,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:09:41,786 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-19 01:09:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:44,641 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-19 01:09:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:09:44,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 01:09:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:44,646 INFO L225 Difference]: With dead ends: 371 [2020-08-19 01:09:44,646 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 01:09:44,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 01:09:44,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 01:09:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-19 01:09:44,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 01:09:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 01:09:44,667 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 01:09:44,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:44,668 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 01:09:44,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 01:09:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 01:09:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:09:44,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:44,671 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:09:44,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:09:44,671 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:44,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 01:09:44,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:44,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105491826] [2020-08-19 01:09:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-19 01:09:45,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105491826] [2020-08-19 01:09:45,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:45,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 01:09:45,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477914704] [2020-08-19 01:09:45,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 01:09:45,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:45,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 01:09:45,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:09:45,810 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-19 01:09:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:48,041 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-19 01:09:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 01:09:48,042 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 01:09:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:48,047 INFO L225 Difference]: With dead ends: 323 [2020-08-19 01:09:48,047 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 01:09:48,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:09:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 01:09:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-19 01:09:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-19 01:09:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-19 01:09:48,067 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-19 01:09:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:48,068 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-19 01:09:48,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 01:09:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-19 01:09:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 01:09:48,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:48,071 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 01:09:48,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:09:48,071 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 01:09:48,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:48,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110152660] [2020-08-19 01:09:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:48,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:48,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:48,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:50,569 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-19 01:09:51,449 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-19 01:09:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:51,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:52,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:53,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:54,592 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-19 01:09:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat