/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=0.1 --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 03:02:59,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:02:59,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:02:59,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:02:59,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:02:59,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:02:59,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:02:59,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:02:59,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:02:59,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:02:59,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:02:59,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:02:59,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:02:59,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:02:59,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:02:59,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:02:59,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:02:59,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:02:59,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:02:59,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:02:59,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:02:59,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:02:59,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:02:59,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:02:59,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:02:59,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:02:59,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:02:59,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:02:59,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:02:59,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:02:59,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:02:59,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:02:59,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:02:59,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:02:59,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:02:59,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:02:59,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:02:59,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:02:59,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:02:59,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:02:59,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:02:59,681 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 03:02:59,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:02:59,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:02:59,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:02:59,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:02:59,725 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:02:59,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:02:59,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:02:59,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:02:59,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:02:59,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:02:59,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:02:59,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:02:59,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:02:59,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:02:59,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:02:59,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:02:59,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:02:59,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:02:59,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:02:59,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:02:59,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:02:59,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:02:59,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:02:59,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:02:59,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:02:59,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:02:59,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:02:59,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:02:59,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:02:59,731 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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-08-22 03:03:00,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:03:00,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:03:00,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:03:00,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:03:00,108 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:03:00,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 03:03:00,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/025b5213f/c026e261a1c74f3fa6a1be740f008fd3/FLAGe6434027b [2020-08-22 03:03:00,757 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:03:00,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 03:03:00,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/025b5213f/c026e261a1c74f3fa6a1be740f008fd3/FLAGe6434027b [2020-08-22 03:03:01,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/025b5213f/c026e261a1c74f3fa6a1be740f008fd3 [2020-08-22 03:03:01,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:03:01,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:03:01,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:03:01,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:03:01,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:03:01,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c8794a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01, skipping insertion in model container [2020-08-22 03:03:01,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:03:01,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:03:01,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:03:01,583 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:03:01,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:03:01,708 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:03:01,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01 WrapperNode [2020-08-22 03:03:01,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:03:01,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:03:01,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:03:01,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:03:01,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (1/1) ... [2020-08-22 03:03:01,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:03:01,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:03:01,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:03:01,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:03:01,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (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 03:03:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:03:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:03:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 03:03:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 03:03:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 03:03:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 03:03:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 03:03:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 03:03:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 03:03:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 03:03:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 03:03:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 03:03:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 03:03:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 03:03:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 03:03:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 03:03:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 03:03:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 03:03:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 03:03:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 03:03:01,879 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 03:03:01,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:03:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:03:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 03:03:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 03:03:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 03:03:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 03:03:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 03:03:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 03:03:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 03:03:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 03:03:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 03:03:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 03:03:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 03:03:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 03:03:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 03:03:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 03:03:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 03:03:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 03:03:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 03:03:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 03:03:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 03:03:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 03:03:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 03:03:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 03:03:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 03:03:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 03:03:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 03:03:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 03:03:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 03:03:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 03:03:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 03:03:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 03:03:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 03:03:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 03:03:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 03:03:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 03:03:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 03:03:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 03:03:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 03:03:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 03:03:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 03:03:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 03:03:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 03:03:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 03:03:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 03:03:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 03:03:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 03:03:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 03:03:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 03:03:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 03:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 03:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 03:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 03:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 03:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 03:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 03:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 03:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 03:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 03:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 03:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 03:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 03:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 03:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 03:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 03:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 03:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 03:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 03:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 03:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 03:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 03:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 03:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 03:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 03:03:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 03:03:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 03:03:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 03:03:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 03:03:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 03:03:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 03:03:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 03:03:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 03:03:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 03:03:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 03:03:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 03:03:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 03:03:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 03:03:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 03:03:01,894 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 03:03:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 03:03:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 03:03:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 03:03:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 03:03:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 03:03:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 03:03:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 03:03:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 03:03:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:03:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 03:03:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 03:03:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:03:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:03:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 03:03:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 03:03:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:03:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 03:03:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:03:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 03:03:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 03:03:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:03:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 03:03:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 03:03:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 03:03:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 03:03:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 03:03:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 03:03:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 03:03:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 03:03:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 03:03:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 03:03:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 03:03:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:03:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:03:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:03:02,738 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:03:02,738 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 03:03:02,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:03:02 BoogieIcfgContainer [2020-08-22 03:03:02,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:03:02,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:03:02,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:03:02,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:03:02,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:03:01" (1/3) ... [2020-08-22 03:03:02,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ea9fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:03:02, skipping insertion in model container [2020-08-22 03:03:02,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:03:01" (2/3) ... [2020-08-22 03:03:02,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ea9fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:03:02, skipping insertion in model container [2020-08-22 03:03:02,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:03:02" (3/3) ... [2020-08-22 03:03:02,758 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-22 03:03:02,769 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:03:02,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:03:02,794 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:03:02,831 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:03:02,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:03:02,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:03:02,832 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:03:02,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:03:02,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:03:02,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:03:02,835 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:03:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 03:03:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 03:03:02,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:02,875 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 03:03:02,875 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:02,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 03:03:02,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:02,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657439126] [2020-08-22 03:03:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:03:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:03,388 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 03:03:03,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657439126] [2020-08-22 03:03:03,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:03:03,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:03:03,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216777313] [2020-08-22 03:03:03,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:03:03,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:03,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:03:03,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:03:03,422 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 03:03:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:03,981 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 03:03:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:03:03,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 03:03:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:03,997 INFO L225 Difference]: With dead ends: 343 [2020-08-22 03:03:03,997 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 03:03:04,004 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 03:03:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 03:03:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 03:03:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 03:03:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 03:03:04,074 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 03:03:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:04,074 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 03:03:04,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:03:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 03:03:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 03:03:04,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:04,079 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 03:03:04,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:03:04,079 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 03:03:04,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:04,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855231751] [2020-08-22 03:03:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:03:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:04,514 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 03:03:04,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855231751] [2020-08-22 03:03:04,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:03:04,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:03:04,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909146847] [2020-08-22 03:03:04,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:03:04,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:04,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:03:04,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:03:04,518 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 03:03:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:05,681 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 03:03:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:03:05,682 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 03:03:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:05,686 INFO L225 Difference]: With dead ends: 327 [2020-08-22 03:03:05,687 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 03:03:05,689 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 03:03:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 03:03:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 03:03:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 03:03:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 03:03:05,714 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 03:03:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:05,714 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 03:03:05,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:03:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 03:03:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:03:05,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:05,719 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 03:03:05,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:03:05,719 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:05,720 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 03:03:05,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:05,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725063161] [2020-08-22 03:03:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:05,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:03:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:03:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:07,608 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 03:03:07,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725063161] [2020-08-22 03:03:07,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:03:07,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 03:03:07,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689931594] [2020-08-22 03:03:07,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 03:03:07,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 03:03:07,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-22 03:03:07,615 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-22 03:03:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:10,676 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-22 03:03:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 03:03:10,677 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-22 03:03:10,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:10,682 INFO L225 Difference]: With dead ends: 348 [2020-08-22 03:03:10,682 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 03:03:10,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 03:03:10,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 03:03:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-22 03:03:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 03:03:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-22 03:03:10,726 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-22 03:03:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:10,727 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-22 03:03:10,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 03:03:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-22 03:03:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:03:10,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:10,730 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 03:03:10,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:03:10,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:10,731 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 03:03:10,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:10,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51507351] [2020-08-22 03:03:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:03:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:03:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:11,783 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 03:03:11,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51507351] [2020-08-22 03:03:11,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:03:11,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 03:03:11,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782485075] [2020-08-22 03:03:11,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 03:03:11,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 03:03:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:03:11,786 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-22 03:03:14,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:14,008 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-22 03:03:14,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:03:14,008 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-22 03:03:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:14,011 INFO L225 Difference]: With dead ends: 360 [2020-08-22 03:03:14,012 INFO L226 Difference]: Without dead ends: 193 [2020-08-22 03:03:14,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-22 03:03:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-22 03:03:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-22 03:03:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-22 03:03:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-22 03:03:14,035 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-22 03:03:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:14,036 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-22 03:03:14,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 03:03:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-22 03:03:14,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:03:14,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:14,040 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 03:03:14,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:03:14,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:14,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-22 03:03:14,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:14,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891848270] [2020-08-22 03:03:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:03:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:03:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:15,723 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 03:03:15,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891848270] [2020-08-22 03:03:15,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:03:15,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 03:03:15,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240399008] [2020-08-22 03:03:15,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 03:03:15,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:15,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 03:03:15,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-22 03:03:15,728 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-22 03:03:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:18,489 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-22 03:03:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 03:03:18,489 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-22 03:03:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:18,494 INFO L225 Difference]: With dead ends: 371 [2020-08-22 03:03:18,494 INFO L226 Difference]: Without dead ends: 198 [2020-08-22 03:03:18,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 03:03:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-22 03:03:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-22 03:03:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 03:03:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-22 03:03:18,514 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-22 03:03:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:18,515 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-22 03:03:18,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 03:03:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-22 03:03:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:03:18,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:18,518 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 03:03:18,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:03:18,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-22 03:03:18,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:18,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645084527] [2020-08-22 03:03:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:03:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:03:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:19,852 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 03:03:19,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645084527] [2020-08-22 03:03:19,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:03:19,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 03:03:19,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514757205] [2020-08-22 03:03:19,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 03:03:19,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:03:19,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 03:03:19,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-22 03:03:19,857 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-22 03:03:22,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:03:22,088 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-22 03:03:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 03:03:22,089 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-22 03:03:22,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:03:22,093 INFO L225 Difference]: With dead ends: 323 [2020-08-22 03:03:22,093 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 03:03:22,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 03:03:22,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 03:03:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-22 03:03:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-22 03:03:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-22 03:03:22,126 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-22 03:03:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:03:22,129 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-22 03:03:22,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 03:03:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-22 03:03:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 03:03:22,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:03:22,133 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 03:03:22,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:03:22,133 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:03:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:03:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 03:03:22,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:03:22,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601871968] [2020-08-22 03:03:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:03:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:03:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:22,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:23,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:24,368 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-22 03:03:25,167 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-22 03:03:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:26,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:03:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:03:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:03:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:27,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:03:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:03:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:03:28,032 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-22 03:03:28,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:03:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat