/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-22 05:28:39,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:28:39,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:28:39,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:28:39,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:28:39,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:28:39,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:28:39,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:28:39,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:28:39,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:28:39,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:28:39,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:28:39,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:28:39,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:28:39,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:28:39,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:28:39,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:28:39,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:28:39,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:28:39,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:28:39,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:28:39,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:28:39,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:28:39,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:28:39,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:28:39,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:28:39,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:28:39,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:28:39,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:28:39,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:28:39,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:28:39,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:28:39,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:28:39,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:28:39,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:28:39,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:28:39,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:28:39,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:28:39,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:28:39,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:28:39,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:28:39,835 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 [2020-08-22 05:28:39,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:28:39,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:28:39,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:28:39,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:28:39,859 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:28:39,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:28:39,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:28:39,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:28:39,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:28:39,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:28:39,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:28:39,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:28:39,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:28:39,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:28:39,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:28:39,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:28:39,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:28:39,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:28:39,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:28:39,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:28:39,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:28:39,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:28:39,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:28:39,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:28:39,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:28:39,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:28:39,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:28:39,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:28:39,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:28:39,864 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:28:40,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:28:40,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:28:40,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:28:40,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:28:40,169 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:28:40,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 05:28:40,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de1aeb4e9/861ebc27a2404363a16099edae2f9394/FLAG2fd29402b [2020-08-22 05:28:40,746 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:28:40,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 05:28:40,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de1aeb4e9/861ebc27a2404363a16099edae2f9394/FLAG2fd29402b [2020-08-22 05:28:41,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de1aeb4e9/861ebc27a2404363a16099edae2f9394 [2020-08-22 05:28:41,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:28:41,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:28:41,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:41,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:28:41,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:28:41,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f59e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41, skipping insertion in model container [2020-08-22 05:28:41,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:28:41,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:28:41,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:41,639 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:28:41,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:41,792 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:28:41,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41 WrapperNode [2020-08-22 05:28:41,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:41,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:28:41,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:28:41,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:28:41,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:28:41,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:28:41,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:28:41,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:28:41,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (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 [2020-08-22 05:28:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:28:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:28:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:28:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 05:28:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 05:28:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 05:28:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 05:28:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 05:28:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 05:28:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 05:28:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 05:28:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 05:28:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 05:28:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 05:28:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 05:28:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 05:28:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 05:28:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 05:28:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 05:28:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 05:28:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 05:28:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:28:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:28:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 05:28:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 05:28:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 05:28:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 05:28:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 05:28:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 05:28:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 05:28:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 05:28:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 05:28:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 05:28:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 05:28:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 05:28:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 05:28:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 05:28:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 05:28:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 05:28:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 05:28:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 05:28:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 05:28:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 05:28:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 05:28:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 05:28:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 05:28:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 05:28:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 05:28:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 05:28:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 05:28:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 05:28:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 05:28:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 05:28:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 05:28:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 05:28:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 05:28:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 05:28:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 05:28:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 05:28:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 05:28:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 05:28:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:28:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:28:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 05:28:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:28:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 05:28:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 05:28:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 05:28:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 05:28:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 05:28:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:28:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 05:28:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 05:28:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 05:28:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 05:28:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 05:28:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 05:28:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 05:28:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 05:28:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 05:28:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 05:28:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 05:28:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 05:28:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 05:28:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 05:28:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 05:28:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 05:28:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 05:28:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 05:28:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 05:28:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 05:28:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 05:28:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 05:28:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 05:28:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 05:28:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 05:28:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 05:28:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 05:28:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 05:28:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 05:28:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 05:28:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 05:28:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 05:28:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 05:28:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 05:28:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 05:28:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 05:28:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:28:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 05:28:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 05:28:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:28:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:28:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 05:28:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 05:28:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:28:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 05:28:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:28:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:28:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:28:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:28:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 05:28:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 05:28:41,982 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 05:28:41,982 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 05:28:41,982 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 05:28:41,982 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 05:28:41,982 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 05:28:41,983 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 05:28:41,983 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 05:28:41,983 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 05:28:41,983 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 05:28:41,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:28:41,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:28:41,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:28:42,830 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:28:42,830 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 05:28:42,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:42 BoogieIcfgContainer [2020-08-22 05:28:42,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:28:42,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:28:42,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:28:42,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:28:42,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:28:41" (1/3) ... [2020-08-22 05:28:42,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b619201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:42, skipping insertion in model container [2020-08-22 05:28:42,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41" (2/3) ... [2020-08-22 05:28:42,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b619201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:42, skipping insertion in model container [2020-08-22 05:28:42,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:42" (3/3) ... [2020-08-22 05:28:42,850 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-22 05:28:42,861 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:28:42,870 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:28:42,884 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:28:42,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:28:42,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:28:42,914 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:28:42,914 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:28:42,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:28:42,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:28:42,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:28:42,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:28:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 05:28:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 05:28:42,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:42,957 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] [2020-08-22 05:28:42,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 05:28:42,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:42,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670846849] [2020-08-22 05:28:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 05:28:43,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670846849] [2020-08-22 05:28:43,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:43,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:28:43,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108729101] [2020-08-22 05:28:43,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:28:43,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:43,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:28:43,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:28:43,451 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 05:28:43,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:43,873 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 05:28:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:28:43,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 05:28:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:43,889 INFO L225 Difference]: With dead ends: 343 [2020-08-22 05:28:43,889 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 05:28:43,896 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 [2020-08-22 05:28:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 05:28:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 05:28:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 05:28:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 05:28:43,963 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 05:28:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:43,964 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 05:28:43,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:28:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 05:28:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 05:28:43,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:43,968 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] [2020-08-22 05:28:43,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:28:43,968 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:43,969 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 05:28:43,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:43,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131842411] [2020-08-22 05:28:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 05:28:44,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131842411] [2020-08-22 05:28:44,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:44,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:28:44,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260005281] [2020-08-22 05:28:44,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:28:44,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:44,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:28:44,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:28:44,449 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 05:28:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:45,642 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 05:28:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:28:45,643 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 05:28:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:45,647 INFO L225 Difference]: With dead ends: 327 [2020-08-22 05:28:45,647 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 05:28:45,649 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 [2020-08-22 05:28:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 05:28:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 05:28:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 05:28:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 05:28:45,673 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 05:28:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:45,674 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 05:28:45,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:28:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 05:28:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:28:45,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:45,680 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] [2020-08-22 05:28:45,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:28:45,680 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:45,680 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 05:28:45,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:45,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507950000] [2020-08-22 05:28:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:28:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 05:28:47,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507950000] [2020-08-22 05:28:47,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:47,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 05:28:47,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61882795] [2020-08-22 05:28:47,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 05:28:47,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:47,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 05:28:47,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:28:47,273 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-22 05:28:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:50,135 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-22 05:28:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 05:28:50,135 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-22 05:28:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:50,138 INFO L225 Difference]: With dead ends: 348 [2020-08-22 05:28:50,138 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 05:28:50,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 05:28:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 05:28:50,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-22 05:28:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 05:28:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-22 05:28:50,163 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-22 05:28:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:50,163 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-22 05:28:50,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 05:28:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-22 05:28:50,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:28:50,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:50,166 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] [2020-08-22 05:28:50,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:28:50,167 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:50,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:50,167 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 05:28:50,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:50,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350444714] [2020-08-22 05:28:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:50,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:50,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:50,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:28:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-22 05:28:51,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350444714] [2020-08-22 05:28:51,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:51,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 05:28:51,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215448545] [2020-08-22 05:28:51,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 05:28:51,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:51,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 05:28:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:28:51,558 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-22 05:28:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:53,595 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-22 05:28:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:28:53,598 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-22 05:28:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:53,601 INFO L225 Difference]: With dead ends: 360 [2020-08-22 05:28:53,601 INFO L226 Difference]: Without dead ends: 193 [2020-08-22 05:28:53,603 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 [2020-08-22 05:28:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-22 05:28:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-22 05:28:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-22 05:28:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-22 05:28:53,630 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-22 05:28:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:53,634 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-22 05:28:53,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 05:28:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-22 05:28:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:28:53,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:53,639 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] [2020-08-22 05:28:53,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:28:53,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-22 05:28:53,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:53,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792667210] [2020-08-22 05:28:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:28:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-22 05:28:54,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792667210] [2020-08-22 05:28:54,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:54,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 05:28:54,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171918978] [2020-08-22 05:28:54,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 05:28:54,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:54,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 05:28:54,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:28:54,841 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-22 05:28:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:57,372 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-22 05:28:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 05:28:57,373 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-22 05:28:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:57,376 INFO L225 Difference]: With dead ends: 371 [2020-08-22 05:28:57,376 INFO L226 Difference]: Without dead ends: 198 [2020-08-22 05:28:57,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 05:28:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-22 05:28:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-22 05:28:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 05:28:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-22 05:28:57,398 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-22 05:28:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:57,399 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-22 05:28:57,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 05:28:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-22 05:28:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:28:57,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:57,402 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] [2020-08-22 05:28:57,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:28:57,403 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:57,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-22 05:28:57,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:57,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269317382] [2020-08-22 05:28:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:28:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-22 05:28:58,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269317382] [2020-08-22 05:28:58,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:58,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 05:28:58,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223982328] [2020-08-22 05:28:58,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 05:28:58,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:58,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 05:28:58,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-22 05:28:58,451 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-22 05:29:00,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:29:00,514 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-22 05:29:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 05:29:00,514 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-22 05:29:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:29:00,519 INFO L225 Difference]: With dead ends: 323 [2020-08-22 05:29:00,520 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 05:29:00,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 05:29:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 05:29:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-22 05:29:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-22 05:29:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-22 05:29:00,555 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-22 05:29:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:29:00,557 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-22 05:29:00,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 05:29:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-22 05:29:00,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 05:29:00,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:29:00,567 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] [2020-08-22 05:29:00,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:29:00,567 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:29:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:29:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 05:29:00,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:29:00,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013738143] [2020-08-22 05:29:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:29:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:29:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:01,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:29:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:02,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:02,720 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-22 05:29:03,444 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-22 05:29:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:29:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:04,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:04,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:29:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:05,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:05,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:29:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:06,017 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-22 05:29:06,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:34,641 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 449 DAG size of output: 50