./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ecd70163e84c8e1a236d7543bf55ca7587f7becacb8c522f7caae4b1076f13b5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:34:22,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:34:22,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:34:22,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:34:22,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:34:22,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:34:22,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:34:22,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:34:22,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:34:22,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:34:22,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:34:22,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:34:22,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:34:22,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:34:22,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:34:22,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:34:22,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:34:22,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:34:22,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:34:22,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:34:22,757 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:34:22,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:34:22,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:34:22,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:34:22,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:34:22,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:34:22,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:34:22,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:34:22,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:34:22,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:34:22,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:34:22,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:34:22,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:34:22,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:34:22,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:34:22,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:34:22,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:34:22,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:34:22,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:34:22,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:34:22,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:34:22,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:34:22,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:34:22,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:34:22,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:34:22,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:34:22,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:34:22,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:34:22,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:34:22,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:34:22,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:34:22,802 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:34:22,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:34:22,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:34:22,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:34:22,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:34:22,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:34:22,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:34:22,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:34:22,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:34:22,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:34:22,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:34:22,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:34:22,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:34:22,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:34:22,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:34:22,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:34:22,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:34:22,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:34:22,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:34:22,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:34:22,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:34:22,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:34:22,806 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:34:22,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:34:22,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:34:22,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecd70163e84c8e1a236d7543bf55ca7587f7becacb8c522f7caae4b1076f13b5 [2022-07-19 20:34:22,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:34:23,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:34:23,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:34:23,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:34:23,013 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:34:23,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2022-07-19 20:34:23,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25181da58/37e2a39ef7474722ba3465c0a27cdfb1/FLAG4b2992409 [2022-07-19 20:34:23,500 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:34:23,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2022-07-19 20:34:23,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25181da58/37e2a39ef7474722ba3465c0a27cdfb1/FLAG4b2992409 [2022-07-19 20:34:23,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25181da58/37e2a39ef7474722ba3465c0a27cdfb1 [2022-07-19 20:34:23,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:34:23,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:34:23,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:34:23,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:34:23,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:34:23,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c32bede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23, skipping insertion in model container [2022-07-19 20:34:23,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:34:23,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:34:23,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[914,927] [2022-07-19 20:34:23,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[7115,7128] [2022-07-19 20:34:23,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:34:23,821 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:34:23,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[914,927] [2022-07-19 20:34:23,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[7115,7128] [2022-07-19 20:34:23,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:34:23,882 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:34:23,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23 WrapperNode [2022-07-19 20:34:23,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:34:23,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:34:23,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:34:23,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:34:23,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,958 INFO L137 Inliner]: procedures = 75, calls = 91, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 987 [2022-07-19 20:34:23,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:34:23,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:34:23,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:34:23,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:34:23,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:23,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:24,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:24,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:24,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:34:24,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:34:24,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:34:24,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:34:24,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (1/1) ... [2022-07-19 20:34:24,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:34:24,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:34:24,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:34:24,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:34:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:34:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:34:24,078 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:34:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:34:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:34:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:34:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:34:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:34:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:34:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:34:24,080 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:34:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:34:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:34:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:34:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:34:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:34:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:34:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:34:24,081 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:34:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:34:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:34:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:34:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:34:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:34:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:34:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:34:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:34:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:34:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:34:24,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:34:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:34:24,083 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:34:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-19 20:34:24,083 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-19 20:34:24,210 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:34:24,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:34:24,883 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:34:24,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:34:24,893 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-19 20:34:24,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:34:24 BoogieIcfgContainer [2022-07-19 20:34:24,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:34:24,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:34:24,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:34:24,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:34:24,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:34:23" (1/3) ... [2022-07-19 20:34:24,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3024279c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:34:24, skipping insertion in model container [2022-07-19 20:34:24,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:34:23" (2/3) ... [2022-07-19 20:34:24,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3024279c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:34:24, skipping insertion in model container [2022-07-19 20:34:24,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:34:24" (3/3) ... [2022-07-19 20:34:24,901 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2022-07-19 20:34:24,911 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:34:24,911 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:34:24,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:34:24,959 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5da07983, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@130e5e7b [2022-07-19 20:34:24,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:34:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 466 states, 407 states have (on average 1.6412776412776413) internal successors, (668), 415 states have internal predecessors, (668), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-19 20:34:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:34:24,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:24,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:24,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -332342255, now seen corresponding path program 1 times [2022-07-19 20:34:24,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:24,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102902593] [2022-07-19 20:34:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:25,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102902593] [2022-07-19 20:34:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102902593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:25,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:25,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:34:25,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476689212] [2022-07-19 20:34:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:25,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:34:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:34:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:34:25,315 INFO L87 Difference]: Start difference. First operand has 466 states, 407 states have (on average 1.6412776412776413) internal successors, (668), 415 states have internal predecessors, (668), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:26,217 INFO L93 Difference]: Finished difference Result 1039 states and 1660 transitions. [2022-07-19 20:34:26,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:34:26,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:34:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:26,229 INFO L225 Difference]: With dead ends: 1039 [2022-07-19 20:34:26,229 INFO L226 Difference]: Without dead ends: 590 [2022-07-19 20:34:26,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:26,238 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1158 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:26,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 2372 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:34:26,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-07-19 20:34:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 551. [2022-07-19 20:34:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 475 states have (on average 1.5263157894736843) internal successors, (725), 482 states have internal predecessors, (725), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-07-19 20:34:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 830 transitions. [2022-07-19 20:34:26,306 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 830 transitions. Word has length 65 [2022-07-19 20:34:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:26,306 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 830 transitions. [2022-07-19 20:34:26,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 830 transitions. [2022-07-19 20:34:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:34:26,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:26,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:26,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:34:26,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:26,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 71443696, now seen corresponding path program 1 times [2022-07-19 20:34:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:26,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632596238] [2022-07-19 20:34:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:26,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:26,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:26,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632596238] [2022-07-19 20:34:26,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632596238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:26,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:26,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:34:26,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394990777] [2022-07-19 20:34:26,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:26,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:34:26,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:34:26,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:34:26,425 INFO L87 Difference]: Start difference. First operand 551 states and 830 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:27,315 INFO L93 Difference]: Finished difference Result 898 states and 1307 transitions. [2022-07-19 20:34:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:34:27,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:34:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:27,320 INFO L225 Difference]: With dead ends: 898 [2022-07-19 20:34:27,320 INFO L226 Difference]: Without dead ends: 721 [2022-07-19 20:34:27,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:34:27,322 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 1383 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:27,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 2609 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:34:27,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-07-19 20:34:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 647. [2022-07-19 20:34:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 551 states have (on average 1.5045372050816697) internal successors, (829), 560 states have internal predecessors, (829), 63 states have call successors, (63), 29 states have call predecessors, (63), 31 states have return successors, (72), 61 states have call predecessors, (72), 59 states have call successors, (72) [2022-07-19 20:34:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 964 transitions. [2022-07-19 20:34:27,356 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 964 transitions. Word has length 65 [2022-07-19 20:34:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:27,356 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 964 transitions. [2022-07-19 20:34:27,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 964 transitions. [2022-07-19 20:34:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:34:27,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:27,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:27,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:34:27,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1957142414, now seen corresponding path program 1 times [2022-07-19 20:34:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:27,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148295025] [2022-07-19 20:34:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:27,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:27,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148295025] [2022-07-19 20:34:27,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148295025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:27,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:27,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:34:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308253813] [2022-07-19 20:34:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:27,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:34:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:34:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:34:27,486 INFO L87 Difference]: Start difference. First operand 647 states and 964 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:28,284 INFO L93 Difference]: Finished difference Result 948 states and 1378 transitions. [2022-07-19 20:34:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:34:28,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:34:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:28,288 INFO L225 Difference]: With dead ends: 948 [2022-07-19 20:34:28,288 INFO L226 Difference]: Without dead ends: 681 [2022-07-19 20:34:28,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:34:28,290 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 911 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:28,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 2743 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:34:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-07-19 20:34:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 652. [2022-07-19 20:34:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 555 states have (on average 1.4972972972972973) internal successors, (831), 564 states have internal predecessors, (831), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (73), 62 states have call predecessors, (73), 59 states have call successors, (73) [2022-07-19 20:34:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 967 transitions. [2022-07-19 20:34:28,312 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 967 transitions. Word has length 65 [2022-07-19 20:34:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:28,312 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 967 transitions. [2022-07-19 20:34:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 967 transitions. [2022-07-19 20:34:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:34:28,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:28,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:34:28,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1308465584, now seen corresponding path program 1 times [2022-07-19 20:34:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:28,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339512527] [2022-07-19 20:34:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:28,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:28,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:28,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339512527] [2022-07-19 20:34:28,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339512527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:28,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:28,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:34:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417682190] [2022-07-19 20:34:28,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:28,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:34:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:28,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:34:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:34:28,425 INFO L87 Difference]: Start difference. First operand 652 states and 967 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:34:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:29,791 INFO L93 Difference]: Finished difference Result 1974 states and 2763 transitions. [2022-07-19 20:34:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:34:29,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-19 20:34:29,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:29,797 INFO L225 Difference]: With dead ends: 1974 [2022-07-19 20:34:29,797 INFO L226 Difference]: Without dead ends: 1684 [2022-07-19 20:34:29,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:34:29,799 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 3462 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:29,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3476 Valid, 2888 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:34:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-07-19 20:34:29,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1553. [2022-07-19 20:34:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1270 states have (on average 1.3937007874015748) internal successors, (1770), 1294 states have internal predecessors, (1770), 151 states have call successors, (151), 112 states have call predecessors, (151), 130 states have return successors, (187), 149 states have call predecessors, (187), 147 states have call successors, (187) [2022-07-19 20:34:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2108 transitions. [2022-07-19 20:34:29,849 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2108 transitions. Word has length 65 [2022-07-19 20:34:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:29,850 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2108 transitions. [2022-07-19 20:34:29,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:34:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2108 transitions. [2022-07-19 20:34:29,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:34:29,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:29,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:29,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:34:29,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1935052623, now seen corresponding path program 1 times [2022-07-19 20:34:29,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:29,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50680546] [2022-07-19 20:34:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:29,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:29,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50680546] [2022-07-19 20:34:29,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50680546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:29,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:29,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:34:29,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661834150] [2022-07-19 20:34:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:34:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:34:29,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:34:29,925 INFO L87 Difference]: Start difference. First operand 1553 states and 2108 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:30,781 INFO L93 Difference]: Finished difference Result 2844 states and 3781 transitions. [2022-07-19 20:34:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:34:30,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:34:30,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:30,788 INFO L225 Difference]: With dead ends: 2844 [2022-07-19 20:34:30,788 INFO L226 Difference]: Without dead ends: 1659 [2022-07-19 20:34:30,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:34:30,794 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 612 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:30,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 3054 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:34:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-07-19 20:34:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1583. [2022-07-19 20:34:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1294 states have (on average 1.3802163833075733) internal successors, (1786), 1318 states have internal predecessors, (1786), 151 states have call successors, (151), 112 states have call predecessors, (151), 136 states have return successors, (193), 155 states have call predecessors, (193), 147 states have call successors, (193) [2022-07-19 20:34:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2130 transitions. [2022-07-19 20:34:30,853 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2130 transitions. Word has length 65 [2022-07-19 20:34:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:30,853 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2130 transitions. [2022-07-19 20:34:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2130 transitions. [2022-07-19 20:34:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:34:30,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:30,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:30,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:34:30,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash -548849229, now seen corresponding path program 1 times [2022-07-19 20:34:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:30,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776268257] [2022-07-19 20:34:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:30,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:30,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776268257] [2022-07-19 20:34:30,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776268257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:30,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:30,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:34:30,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67686838] [2022-07-19 20:34:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:30,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:34:30,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:34:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:34:30,949 INFO L87 Difference]: Start difference. First operand 1583 states and 2130 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:31,709 INFO L93 Difference]: Finished difference Result 2838 states and 3677 transitions. [2022-07-19 20:34:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:34:31,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:34:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:31,717 INFO L225 Difference]: With dead ends: 2838 [2022-07-19 20:34:31,717 INFO L226 Difference]: Without dead ends: 1846 [2022-07-19 20:34:31,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:34:31,720 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 1366 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:31,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 2354 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:34:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-07-19 20:34:31,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1525. [2022-07-19 20:34:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1252 states have (on average 1.3777955271565496) internal successors, (1725), 1271 states have internal predecessors, (1725), 145 states have call successors, (145), 107 states have call predecessors, (145), 126 states have return successors, (178), 148 states have call predecessors, (178), 141 states have call successors, (178) [2022-07-19 20:34:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2048 transitions. [2022-07-19 20:34:31,789 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2048 transitions. Word has length 65 [2022-07-19 20:34:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:31,791 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2048 transitions. [2022-07-19 20:34:31,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2048 transitions. [2022-07-19 20:34:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:34:31,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:31,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:31,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:34:31,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:31,794 INFO L85 PathProgramCache]: Analyzing trace with hash -682862735, now seen corresponding path program 1 times [2022-07-19 20:34:31,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:31,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586221492] [2022-07-19 20:34:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:31,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:31,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:31,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586221492] [2022-07-19 20:34:31,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586221492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:31,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:31,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72022270] [2022-07-19 20:34:31,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:31,877 INFO L87 Difference]: Start difference. First operand 1525 states and 2048 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:32,227 INFO L93 Difference]: Finished difference Result 3864 states and 5009 transitions. [2022-07-19 20:34:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:34:32,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:34:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:32,238 INFO L225 Difference]: With dead ends: 3864 [2022-07-19 20:34:32,238 INFO L226 Difference]: Without dead ends: 2708 [2022-07-19 20:34:32,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:34:32,243 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1334 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:32,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 1983 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:34:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-07-19 20:34:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2588. [2022-07-19 20:34:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2588 states, 2072 states have (on average 1.3112934362934363) internal successors, (2717), 2108 states have internal predecessors, (2717), 264 states have call successors, (264), 206 states have call predecessors, (264), 250 states have return successors, (369), 276 states have call predecessors, (369), 260 states have call successors, (369) [2022-07-19 20:34:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3350 transitions. [2022-07-19 20:34:32,357 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3350 transitions. Word has length 65 [2022-07-19 20:34:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:32,357 INFO L495 AbstractCegarLoop]: Abstraction has 2588 states and 3350 transitions. [2022-07-19 20:34:32,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:34:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3350 transitions. [2022-07-19 20:34:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:34:32,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:32,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:32,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:34:32,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash 988669412, now seen corresponding path program 1 times [2022-07-19 20:34:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:32,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486135527] [2022-07-19 20:34:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:32,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:32,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486135527] [2022-07-19 20:34:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486135527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:32,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:32,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:34:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201433838] [2022-07-19 20:34:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:32,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:34:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:34:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:34:32,421 INFO L87 Difference]: Start difference. First operand 2588 states and 3350 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:32,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:32,984 INFO L93 Difference]: Finished difference Result 5904 states and 7495 transitions. [2022-07-19 20:34:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:34:32,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:34:32,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:32,998 INFO L225 Difference]: With dead ends: 5904 [2022-07-19 20:34:32,998 INFO L226 Difference]: Without dead ends: 3690 [2022-07-19 20:34:33,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:34:33,004 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 788 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:33,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1968 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:34:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2022-07-19 20:34:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3422. [2022-07-19 20:34:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 2720 states have (on average 1.2911764705882354) internal successors, (3512), 2761 states have internal predecessors, (3512), 356 states have call successors, (356), 286 states have call predecessors, (356), 344 states have return successors, (483), 377 states have call predecessors, (483), 352 states have call successors, (483) [2022-07-19 20:34:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4351 transitions. [2022-07-19 20:34:33,129 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4351 transitions. Word has length 66 [2022-07-19 20:34:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:33,129 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4351 transitions. [2022-07-19 20:34:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4351 transitions. [2022-07-19 20:34:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 20:34:33,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:33,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:34:33,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1936436605, now seen corresponding path program 1 times [2022-07-19 20:34:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:33,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959456277] [2022-07-19 20:34:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:33,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959456277] [2022-07-19 20:34:33,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959456277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:33,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:33,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:34:33,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883264487] [2022-07-19 20:34:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:33,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:34:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:34:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:34:33,189 INFO L87 Difference]: Start difference. First operand 3422 states and 4351 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:33,581 INFO L93 Difference]: Finished difference Result 7294 states and 9125 transitions. [2022-07-19 20:34:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:34:33,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 20:34:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:33,594 INFO L225 Difference]: With dead ends: 7294 [2022-07-19 20:34:33,594 INFO L226 Difference]: Without dead ends: 4244 [2022-07-19 20:34:33,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:34:33,599 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 1637 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:33,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 1405 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:34:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2022-07-19 20:34:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3976. [2022-07-19 20:34:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3976 states, 3160 states have (on average 1.2822784810126582) internal successors, (4052), 3205 states have internal predecessors, (4052), 412 states have call successors, (412), 336 states have call predecessors, (412), 402 states have return successors, (556), 437 states have call predecessors, (556), 408 states have call successors, (556) [2022-07-19 20:34:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5020 transitions. [2022-07-19 20:34:33,718 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5020 transitions. Word has length 72 [2022-07-19 20:34:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:33,718 INFO L495 AbstractCegarLoop]: Abstraction has 3976 states and 5020 transitions. [2022-07-19 20:34:33,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:34:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5020 transitions. [2022-07-19 20:34:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 20:34:33,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:33,720 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:33,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:34:33,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash -416876785, now seen corresponding path program 1 times [2022-07-19 20:34:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:33,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065166818] [2022-07-19 20:34:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:33,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:33,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065166818] [2022-07-19 20:34:33,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065166818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:33,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:33,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:33,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974736723] [2022-07-19 20:34:33,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:33,771 INFO L87 Difference]: Start difference. First operand 3976 states and 5020 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:34:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:34,270 INFO L93 Difference]: Finished difference Result 5062 states and 6315 transitions. [2022-07-19 20:34:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:34:34,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-19 20:34:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:34,288 INFO L225 Difference]: With dead ends: 5062 [2022-07-19 20:34:34,288 INFO L226 Difference]: Without dead ends: 5059 [2022-07-19 20:34:34,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:34:34,291 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1966 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:34,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 1707 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:34:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2022-07-19 20:34:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 4438. [2022-07-19 20:34:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 3515 states have (on average 1.2711237553342816) internal successors, (4468), 3563 states have internal predecessors, (4468), 462 states have call successors, (462), 380 states have call predecessors, (462), 459 states have return successors, (633), 497 states have call predecessors, (633), 459 states have call successors, (633) [2022-07-19 20:34:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 5563 transitions. [2022-07-19 20:34:34,467 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 5563 transitions. Word has length 73 [2022-07-19 20:34:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:34,467 INFO L495 AbstractCegarLoop]: Abstraction has 4438 states and 5563 transitions. [2022-07-19 20:34:34,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:34:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 5563 transitions. [2022-07-19 20:34:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 20:34:34,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:34,469 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:34,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:34:34,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:34,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash -39666611, now seen corresponding path program 1 times [2022-07-19 20:34:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:34,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677788841] [2022-07-19 20:34:34,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:34,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:34,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:34,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677788841] [2022-07-19 20:34:34,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677788841] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:34:34,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760799082] [2022-07-19 20:34:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:34,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:34:34,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:34:34,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:34:34,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:34:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:34,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:34:34,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:34:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:34,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:34:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:35,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760799082] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:34:35,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:34:35,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-19 20:34:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102737204] [2022-07-19 20:34:35,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:34:35,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:34:35,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:34:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:34:35,126 INFO L87 Difference]: Start difference. First operand 4438 states and 5563 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:34:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:36,512 INFO L93 Difference]: Finished difference Result 8756 states and 10772 transitions. [2022-07-19 20:34:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 20:34:36,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-19 20:34:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:36,547 INFO L225 Difference]: With dead ends: 8756 [2022-07-19 20:34:36,548 INFO L226 Difference]: Without dead ends: 8753 [2022-07-19 20:34:36,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-19 20:34:36,552 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 2113 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:36,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 2817 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:34:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2022-07-19 20:34:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 7855. [2022-07-19 20:34:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7855 states, 6190 states have (on average 1.2521809369951535) internal successors, (7751), 6273 states have internal predecessors, (7751), 821 states have call successors, (821), 694 states have call predecessors, (821), 842 states have return successors, (1134), 890 states have call predecessors, (1134), 818 states have call successors, (1134) [2022-07-19 20:34:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7855 states to 7855 states and 9706 transitions. [2022-07-19 20:34:36,897 INFO L78 Accepts]: Start accepts. Automaton has 7855 states and 9706 transitions. Word has length 74 [2022-07-19 20:34:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:36,898 INFO L495 AbstractCegarLoop]: Abstraction has 7855 states and 9706 transitions. [2022-07-19 20:34:36,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:34:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7855 states and 9706 transitions. [2022-07-19 20:34:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 20:34:36,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:36,899 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:36,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:34:37,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 20:34:37,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2126221583, now seen corresponding path program 2 times [2022-07-19 20:34:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567248154] [2022-07-19 20:34:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:37,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567248154] [2022-07-19 20:34:37,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567248154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:37,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:37,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:34:37,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809297418] [2022-07-19 20:34:37,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:37,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:34:37,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:34:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:34:37,163 INFO L87 Difference]: Start difference. First operand 7855 states and 9706 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:34:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:37,584 INFO L93 Difference]: Finished difference Result 10449 states and 12915 transitions. [2022-07-19 20:34:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:34:37,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-19 20:34:37,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:37,602 INFO L225 Difference]: With dead ends: 10449 [2022-07-19 20:34:37,603 INFO L226 Difference]: Without dead ends: 4275 [2022-07-19 20:34:37,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:34:37,613 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1540 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:37,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 1452 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:34:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2022-07-19 20:34:37,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 3267. [2022-07-19 20:34:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 2608 states have (on average 1.2661042944785277) internal successors, (3302), 2637 states have internal predecessors, (3302), 340 states have call successors, (340), 276 states have call predecessors, (340), 317 states have return successors, (433), 356 states have call predecessors, (433), 337 states have call successors, (433) [2022-07-19 20:34:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4075 transitions. [2022-07-19 20:34:37,732 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4075 transitions. Word has length 77 [2022-07-19 20:34:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:37,732 INFO L495 AbstractCegarLoop]: Abstraction has 3267 states and 4075 transitions. [2022-07-19 20:34:37,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:34:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4075 transitions. [2022-07-19 20:34:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 20:34:37,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:37,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:37,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:34:37,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1294168321, now seen corresponding path program 1 times [2022-07-19 20:34:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:37,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504284675] [2022-07-19 20:34:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:34:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:34:37,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:37,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504284675] [2022-07-19 20:34:37,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504284675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:37,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:37,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:34:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664865840] [2022-07-19 20:34:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:37,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:34:37,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:34:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:34:37,808 INFO L87 Difference]: Start difference. First operand 3267 states and 4075 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:34:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:38,790 INFO L93 Difference]: Finished difference Result 9051 states and 11072 transitions. [2022-07-19 20:34:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 20:34:38,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-19 20:34:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:38,804 INFO L225 Difference]: With dead ends: 9051 [2022-07-19 20:34:38,804 INFO L226 Difference]: Without dead ends: 5353 [2022-07-19 20:34:38,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-19 20:34:38,813 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1070 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:38,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2791 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:34:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-07-19 20:34:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5093. [2022-07-19 20:34:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 3999 states have (on average 1.2283070767691924) internal successors, (4912), 4065 states have internal predecessors, (4912), 540 states have call successors, (540), 448 states have call predecessors, (540), 552 states have return successors, (783), 582 states have call predecessors, (783), 537 states have call successors, (783) [2022-07-19 20:34:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 6235 transitions. [2022-07-19 20:34:39,022 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 6235 transitions. Word has length 84 [2022-07-19 20:34:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:39,022 INFO L495 AbstractCegarLoop]: Abstraction has 5093 states and 6235 transitions. [2022-07-19 20:34:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:34:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 6235 transitions. [2022-07-19 20:34:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 20:34:39,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:39,025 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:39,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:34:39,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:39,026 INFO L85 PathProgramCache]: Analyzing trace with hash -432582963, now seen corresponding path program 1 times [2022-07-19 20:34:39,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382939199] [2022-07-19 20:34:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 20:34:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:34:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382939199] [2022-07-19 20:34:39,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382939199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:39,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:39,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:34:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427090787] [2022-07-19 20:34:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:34:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:34:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:34:39,093 INFO L87 Difference]: Start difference. First operand 5093 states and 6235 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:34:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:40,155 INFO L93 Difference]: Finished difference Result 8453 states and 10253 transitions. [2022-07-19 20:34:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 20:34:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-19 20:34:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:40,175 INFO L225 Difference]: With dead ends: 8453 [2022-07-19 20:34:40,176 INFO L226 Difference]: Without dead ends: 4254 [2022-07-19 20:34:40,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-19 20:34:40,184 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2270 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:40,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 2114 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:34:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2022-07-19 20:34:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 3833. [2022-07-19 20:34:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3005 states have (on average 1.2199667221297836) internal successors, (3666), 3059 states have internal predecessors, (3666), 405 states have call successors, (405), 330 states have call predecessors, (405), 421 states have return successors, (552), 446 states have call predecessors, (552), 402 states have call successors, (552) [2022-07-19 20:34:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 4623 transitions. [2022-07-19 20:34:40,330 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 4623 transitions. Word has length 93 [2022-07-19 20:34:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:40,330 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 4623 transitions. [2022-07-19 20:34:40,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:34:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 4623 transitions. [2022-07-19 20:34:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:34:40,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:40,333 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:40,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:34:40,333 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1414647481, now seen corresponding path program 1 times [2022-07-19 20:34:40,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:40,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513847073] [2022-07-19 20:34:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:34:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 20:34:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:34:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:34:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:34:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:34:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 20:34:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 20:34:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513847073] [2022-07-19 20:34:40,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513847073] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:34:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697174653] [2022-07-19 20:34:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:40,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:34:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:34:40,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:34:40,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:34:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 20:34:40,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:34:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 20:34:40,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:34:40,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697174653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:40,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:34:40,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-19 20:34:40,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587861058] [2022-07-19 20:34:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:40,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:34:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:34:40,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:34:40,565 INFO L87 Difference]: Start difference. First operand 3833 states and 4623 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:34:40,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:40,668 INFO L93 Difference]: Finished difference Result 5708 states and 6862 transitions. [2022-07-19 20:34:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:40,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-19 20:34:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:40,674 INFO L225 Difference]: With dead ends: 5708 [2022-07-19 20:34:40,675 INFO L226 Difference]: Without dead ends: 2249 [2022-07-19 20:34:40,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:34:40,681 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 34 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:40,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3435 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:34:40,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2022-07-19 20:34:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2127. [2022-07-19 20:34:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 1745 states have (on average 1.2469914040114614) internal successors, (2176), 1762 states have internal predecessors, (2176), 194 states have call successors, (194), 144 states have call predecessors, (194), 186 states have return successors, (259), 221 states have call predecessors, (259), 191 states have call successors, (259) [2022-07-19 20:34:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2629 transitions. [2022-07-19 20:34:40,757 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2629 transitions. Word has length 145 [2022-07-19 20:34:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 2629 transitions. [2022-07-19 20:34:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:34:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2629 transitions. [2022-07-19 20:34:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 20:34:40,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:40,760 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-07-19 20:34:40,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 20:34:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 20:34:40,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash -944406921, now seen corresponding path program 1 times [2022-07-19 20:34:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:40,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136125449] [2022-07-19 20:34:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:34:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 20:34:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 20:34:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 20:34:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:34:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 20:34:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 20:34:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 20:34:41,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:41,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136125449] [2022-07-19 20:34:41,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136125449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:41,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:41,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:34:41,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351827614] [2022-07-19 20:34:41,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:41,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:34:41,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:34:41,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:34:41,023 INFO L87 Difference]: Start difference. First operand 2127 states and 2629 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:34:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:41,435 INFO L93 Difference]: Finished difference Result 2175 states and 2679 transitions. [2022-07-19 20:34:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:41,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-19 20:34:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:41,440 INFO L225 Difference]: With dead ends: 2175 [2022-07-19 20:34:41,441 INFO L226 Difference]: Without dead ends: 1801 [2022-07-19 20:34:41,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:34:41,442 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 713 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:41,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1898 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:34:41,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-07-19 20:34:41,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1756. [2022-07-19 20:34:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1458 states have (on average 1.2688614540466392) internal successors, (1850), 1472 states have internal predecessors, (1850), 153 states have call successors, (153), 109 states have call predecessors, (153), 143 states have return successors, (204), 175 states have call predecessors, (204), 150 states have call successors, (204) [2022-07-19 20:34:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2207 transitions. [2022-07-19 20:34:41,502 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2207 transitions. Word has length 147 [2022-07-19 20:34:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:41,502 INFO L495 AbstractCegarLoop]: Abstraction has 1756 states and 2207 transitions. [2022-07-19 20:34:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:34:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2207 transitions. [2022-07-19 20:34:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 20:34:41,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:41,505 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:41,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:34:41,505 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1309485723, now seen corresponding path program 1 times [2022-07-19 20:34:41,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:41,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753728248] [2022-07-19 20:34:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:34:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:34:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 20:34:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:34:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 20:34:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 20:34:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:34:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 20:34:41,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:41,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753728248] [2022-07-19 20:34:41,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753728248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:41,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:41,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:41,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638184356] [2022-07-19 20:34:41,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:41,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:41,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:41,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:41,592 INFO L87 Difference]: Start difference. First operand 1756 states and 2207 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:34:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:42,158 INFO L93 Difference]: Finished difference Result 3022 states and 3706 transitions. [2022-07-19 20:34:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:34:42,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-19 20:34:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:42,162 INFO L225 Difference]: With dead ends: 3022 [2022-07-19 20:34:42,162 INFO L226 Difference]: Without dead ends: 1729 [2022-07-19 20:34:42,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:34:42,165 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 641 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:42,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 2388 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:34:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2022-07-19 20:34:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1645. [2022-07-19 20:34:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1371 states have (on average 1.2786287381473378) internal successors, (1753), 1385 states have internal predecessors, (1753), 141 states have call successors, (141), 99 states have call predecessors, (141), 131 states have return successors, (186), 161 states have call predecessors, (186), 138 states have call successors, (186) [2022-07-19 20:34:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2080 transitions. [2022-07-19 20:34:42,218 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2080 transitions. Word has length 159 [2022-07-19 20:34:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:42,218 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2080 transitions. [2022-07-19 20:34:42,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:34:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2080 transitions. [2022-07-19 20:34:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 20:34:42,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:42,220 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:42,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:34:42,220 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:42,221 INFO L85 PathProgramCache]: Analyzing trace with hash 15680806, now seen corresponding path program 1 times [2022-07-19 20:34:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:42,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429201490] [2022-07-19 20:34:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:34:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:34:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:34:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:34:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:34:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:34:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 20:34:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 20:34:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:34:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:34:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 20:34:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 20:34:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:34:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 20:34:42,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:42,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429201490] [2022-07-19 20:34:42,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429201490] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:34:42,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261208071] [2022-07-19 20:34:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:42,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:34:42,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:34:42,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:34:42,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 20:34:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:42,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 20:34:42,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:34:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 20:34:42,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:34:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 20:34:42,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261208071] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:34:42,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:34:42,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-19 20:34:42,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650793474] [2022-07-19 20:34:42,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:34:42,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 20:34:42,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 20:34:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:34:42,734 INFO L87 Difference]: Start difference. First operand 1645 states and 2080 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:34:43,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:43,844 INFO L93 Difference]: Finished difference Result 3381 states and 4219 transitions. [2022-07-19 20:34:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 20:34:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-19 20:34:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:43,849 INFO L225 Difference]: With dead ends: 3381 [2022-07-19 20:34:43,849 INFO L226 Difference]: Without dead ends: 2036 [2022-07-19 20:34:43,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-19 20:34:43,851 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 2511 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:43,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 2557 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:34:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-07-19 20:34:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1923. [2022-07-19 20:34:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1574 states have (on average 1.2426937738246506) internal successors, (1956), 1589 states have internal predecessors, (1956), 181 states have call successors, (181), 137 states have call predecessors, (181), 166 states have return successors, (255), 197 states have call predecessors, (255), 178 states have call successors, (255) [2022-07-19 20:34:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2392 transitions. [2022-07-19 20:34:43,920 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2392 transitions. Word has length 162 [2022-07-19 20:34:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:43,921 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2392 transitions. [2022-07-19 20:34:43,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:34:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2392 transitions. [2022-07-19 20:34:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:43,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:43,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:43,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 20:34:44,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 20:34:44,140 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1202886558, now seen corresponding path program 1 times [2022-07-19 20:34:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:44,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075961239] [2022-07-19 20:34:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:44,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:44,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:44,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:44,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:44,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075961239] [2022-07-19 20:34:44,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075961239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:44,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:44,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:34:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698666702] [2022-07-19 20:34:44,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:44,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:34:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:34:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:34:44,215 INFO L87 Difference]: Start difference. First operand 1923 states and 2392 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:45,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:45,379 INFO L93 Difference]: Finished difference Result 2406 states and 3174 transitions. [2022-07-19 20:34:45,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:45,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:45,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:45,383 INFO L225 Difference]: With dead ends: 2406 [2022-07-19 20:34:45,384 INFO L226 Difference]: Without dead ends: 2054 [2022-07-19 20:34:45,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:34:45,385 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1070 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:45,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1296 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:34:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-07-19 20:34:45,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1923. [2022-07-19 20:34:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1574 states have (on average 1.2420584498094027) internal successors, (1955), 1589 states have internal predecessors, (1955), 181 states have call successors, (181), 137 states have call predecessors, (181), 166 states have return successors, (255), 197 states have call predecessors, (255), 178 states have call successors, (255) [2022-07-19 20:34:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2391 transitions. [2022-07-19 20:34:45,495 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2391 transitions. Word has length 168 [2022-07-19 20:34:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:45,496 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2391 transitions. [2022-07-19 20:34:45,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2391 transitions. [2022-07-19 20:34:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:45,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:45,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:45,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:34:45,498 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1870268448, now seen corresponding path program 1 times [2022-07-19 20:34:45,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:45,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901112141] [2022-07-19 20:34:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:45,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:45,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901112141] [2022-07-19 20:34:45,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901112141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:45,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:45,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:34:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107915555] [2022-07-19 20:34:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:34:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:34:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:34:45,590 INFO L87 Difference]: Start difference. First operand 1923 states and 2391 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:46,732 INFO L93 Difference]: Finished difference Result 2398 states and 3157 transitions. [2022-07-19 20:34:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:46,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:46,737 INFO L225 Difference]: With dead ends: 2398 [2022-07-19 20:34:46,737 INFO L226 Difference]: Without dead ends: 2054 [2022-07-19 20:34:46,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:34:46,738 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 1061 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:46,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1294 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:34:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-07-19 20:34:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1923. [2022-07-19 20:34:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1574 states have (on average 1.241423125794155) internal successors, (1954), 1589 states have internal predecessors, (1954), 181 states have call successors, (181), 137 states have call predecessors, (181), 166 states have return successors, (255), 197 states have call predecessors, (255), 178 states have call successors, (255) [2022-07-19 20:34:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2390 transitions. [2022-07-19 20:34:46,834 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2390 transitions. Word has length 168 [2022-07-19 20:34:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:46,834 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2390 transitions. [2022-07-19 20:34:46,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2390 transitions. [2022-07-19 20:34:46,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:46,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:46,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:34:46,836 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 978117982, now seen corresponding path program 1 times [2022-07-19 20:34:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:46,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608727596] [2022-07-19 20:34:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:46,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:46,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:46,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608727596] [2022-07-19 20:34:46,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608727596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:46,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:46,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:34:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495260961] [2022-07-19 20:34:46,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:34:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:34:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:34:46,933 INFO L87 Difference]: Start difference. First operand 1923 states and 2390 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:49,038 INFO L93 Difference]: Finished difference Result 2881 states and 3941 transitions. [2022-07-19 20:34:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:34:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:49,043 INFO L225 Difference]: With dead ends: 2881 [2022-07-19 20:34:49,043 INFO L226 Difference]: Without dead ends: 2541 [2022-07-19 20:34:49,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:34:49,045 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 1668 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:49,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 1858 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 20:34:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2022-07-19 20:34:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2278. [2022-07-19 20:34:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1902 states have (on average 1.3033648790746581) internal successors, (2479), 1918 states have internal predecessors, (2479), 201 states have call successors, (201), 143 states have call predecessors, (201), 173 states have return successors, (278), 217 states have call predecessors, (278), 198 states have call successors, (278) [2022-07-19 20:34:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 2958 transitions. [2022-07-19 20:34:49,162 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 2958 transitions. Word has length 168 [2022-07-19 20:34:49,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:49,162 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 2958 transitions. [2022-07-19 20:34:49,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 2958 transitions. [2022-07-19 20:34:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:49,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:49,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:49,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:34:49,165 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:49,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1900518490, now seen corresponding path program 1 times [2022-07-19 20:34:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:49,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532059574] [2022-07-19 20:34:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:49,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:49,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532059574] [2022-07-19 20:34:49,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532059574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:49,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:49,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118208753] [2022-07-19 20:34:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:49,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:49,256 INFO L87 Difference]: Start difference. First operand 2278 states and 2958 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:51,980 INFO L93 Difference]: Finished difference Result 3739 states and 5326 transitions. [2022-07-19 20:34:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:34:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:51,986 INFO L225 Difference]: With dead ends: 3739 [2022-07-19 20:34:51,986 INFO L226 Difference]: Without dead ends: 3044 [2022-07-19 20:34:51,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:34:51,988 INFO L413 NwaCegarLoop]: 1074 mSDtfsCounter, 1696 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 3096 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:51,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 3106 Invalid, 3212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3096 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 20:34:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2022-07-19 20:34:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2608. [2022-07-19 20:34:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2205 states have (on average 1.3396825396825396) internal successors, (2954), 2222 states have internal predecessors, (2954), 221 states have call successors, (221), 149 states have call predecessors, (221), 180 states have return successors, (300), 238 states have call predecessors, (300), 218 states have call successors, (300) [2022-07-19 20:34:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 3475 transitions. [2022-07-19 20:34:52,156 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 3475 transitions. Word has length 168 [2022-07-19 20:34:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:52,157 INFO L495 AbstractCegarLoop]: Abstraction has 2608 states and 3475 transitions. [2022-07-19 20:34:52,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:52,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 3475 transitions. [2022-07-19 20:34:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:52,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:52,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:52,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:34:52,159 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:52,160 INFO L85 PathProgramCache]: Analyzing trace with hash -497469348, now seen corresponding path program 1 times [2022-07-19 20:34:52,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:52,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89092841] [2022-07-19 20:34:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:52,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:52,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:52,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:52,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89092841] [2022-07-19 20:34:52,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89092841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:52,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:52,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104425634] [2022-07-19 20:34:52,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:52,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:52,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:52,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:52,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:52,263 INFO L87 Difference]: Start difference. First operand 2608 states and 3475 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:53,582 INFO L93 Difference]: Finished difference Result 4083 states and 5879 transitions. [2022-07-19 20:34:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:53,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:53,587 INFO L225 Difference]: With dead ends: 4083 [2022-07-19 20:34:53,587 INFO L226 Difference]: Without dead ends: 3058 [2022-07-19 20:34:53,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:34:53,589 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1471 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:53,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1590 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:34:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2022-07-19 20:34:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2608. [2022-07-19 20:34:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2205 states have (on average 1.3383219954648526) internal successors, (2951), 2222 states have internal predecessors, (2951), 221 states have call successors, (221), 149 states have call predecessors, (221), 180 states have return successors, (300), 238 states have call predecessors, (300), 218 states have call successors, (300) [2022-07-19 20:34:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 3472 transitions. [2022-07-19 20:34:53,764 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 3472 transitions. Word has length 168 [2022-07-19 20:34:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:53,764 INFO L495 AbstractCegarLoop]: Abstraction has 2608 states and 3472 transitions. [2022-07-19 20:34:53,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 3472 transitions. [2022-07-19 20:34:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:53,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:53,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:53,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:34:53,767 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash -70914850, now seen corresponding path program 1 times [2022-07-19 20:34:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:53,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696808281] [2022-07-19 20:34:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:53,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:53,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:53,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:53,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696808281] [2022-07-19 20:34:53,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696808281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:53,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:53,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:53,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181397351] [2022-07-19 20:34:53,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:53,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:53,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:53,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:53,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:53,855 INFO L87 Difference]: Start difference. First operand 2608 states and 3472 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:55,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:55,168 INFO L93 Difference]: Finished difference Result 4079 states and 5862 transitions. [2022-07-19 20:34:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:55,174 INFO L225 Difference]: With dead ends: 4079 [2022-07-19 20:34:55,174 INFO L226 Difference]: Without dead ends: 3054 [2022-07-19 20:34:55,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:34:55,176 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 1469 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:55,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1586 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:34:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2022-07-19 20:34:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2608. [2022-07-19 20:34:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2205 states have (on average 1.3369614512471655) internal successors, (2948), 2222 states have internal predecessors, (2948), 221 states have call successors, (221), 149 states have call predecessors, (221), 180 states have return successors, (300), 238 states have call predecessors, (300), 218 states have call successors, (300) [2022-07-19 20:34:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 3469 transitions. [2022-07-19 20:34:55,324 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 3469 transitions. Word has length 168 [2022-07-19 20:34:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:55,324 INFO L495 AbstractCegarLoop]: Abstraction has 2608 states and 3469 transitions. [2022-07-19 20:34:55,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:55,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 3469 transitions. [2022-07-19 20:34:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:55,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:55,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:55,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 20:34:55,326 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash -611344356, now seen corresponding path program 1 times [2022-07-19 20:34:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:55,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619923115] [2022-07-19 20:34:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:55,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619923115] [2022-07-19 20:34:55,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619923115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:55,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:55,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:55,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323148407] [2022-07-19 20:34:55,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:55,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:55,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:55,420 INFO L87 Difference]: Start difference. First operand 2608 states and 3469 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:57,972 INFO L93 Difference]: Finished difference Result 4995 states and 7307 transitions. [2022-07-19 20:34:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:34:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:57,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:57,985 INFO L225 Difference]: With dead ends: 4995 [2022-07-19 20:34:57,985 INFO L226 Difference]: Without dead ends: 3970 [2022-07-19 20:34:57,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:34:57,989 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1774 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:57,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 2217 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:34:57,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2022-07-19 20:34:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3278. [2022-07-19 20:34:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 2821 states have (on average 1.3856788372917406) internal successors, (3909), 2840 states have internal predecessors, (3909), 261 states have call successors, (261), 161 states have call predecessors, (261), 194 states have return successors, (348), 280 states have call predecessors, (348), 258 states have call successors, (348) [2022-07-19 20:34:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4518 transitions. [2022-07-19 20:34:58,188 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4518 transitions. Word has length 168 [2022-07-19 20:34:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:34:58,188 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 4518 transitions. [2022-07-19 20:34:58,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4518 transitions. [2022-07-19 20:34:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:34:58,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:34:58,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:34:58,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 20:34:58,191 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:34:58,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:34:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash -767324898, now seen corresponding path program 1 times [2022-07-19 20:34:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:34:58,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133514823] [2022-07-19 20:34:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:34:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:34:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:34:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:34:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:34:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:34:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:34:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:34:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:34:58,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:34:58,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133514823] [2022-07-19 20:34:58,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133514823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:34:58,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:34:58,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:34:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599728972] [2022-07-19 20:34:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:34:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:34:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:34:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:34:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:34:58,305 INFO L87 Difference]: Start difference. First operand 3278 states and 4518 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:34:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:34:59,848 INFO L93 Difference]: Finished difference Result 5651 states and 8343 transitions. [2022-07-19 20:34:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:34:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:34:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:34:59,857 INFO L225 Difference]: With dead ends: 5651 [2022-07-19 20:34:59,858 INFO L226 Difference]: Without dead ends: 3956 [2022-07-19 20:34:59,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:34:59,862 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1262 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:34:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 1820 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:34:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2022-07-19 20:35:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3278. [2022-07-19 20:35:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 2821 states have (on average 1.3839064161644807) internal successors, (3904), 2840 states have internal predecessors, (3904), 261 states have call successors, (261), 161 states have call predecessors, (261), 194 states have return successors, (348), 280 states have call predecessors, (348), 258 states have call successors, (348) [2022-07-19 20:35:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4513 transitions. [2022-07-19 20:35:00,102 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4513 transitions. Word has length 168 [2022-07-19 20:35:00,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:00,103 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 4513 transitions. [2022-07-19 20:35:00,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4513 transitions. [2022-07-19 20:35:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:00,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:00,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:00,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 20:35:00,105 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:00,106 INFO L85 PathProgramCache]: Analyzing trace with hash -356714532, now seen corresponding path program 1 times [2022-07-19 20:35:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376102035] [2022-07-19 20:35:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:00,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:00,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:00,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376102035] [2022-07-19 20:35:00,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376102035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:00,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:00,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449400905] [2022-07-19 20:35:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:00,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:00,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:00,205 INFO L87 Difference]: Start difference. First operand 3278 states and 4513 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:03,039 INFO L93 Difference]: Finished difference Result 7429 states and 11132 transitions. [2022-07-19 20:35:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:35:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:03,057 INFO L225 Difference]: With dead ends: 7429 [2022-07-19 20:35:03,057 INFO L226 Difference]: Without dead ends: 5734 [2022-07-19 20:35:03,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:35:03,062 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 1668 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 3138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:03,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 3071 Invalid, 3138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 20:35:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2022-07-19 20:35:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 4620. [2022-07-19 20:35:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 4055 states have (on average 1.435265104808878) internal successors, (5820), 4078 states have internal predecessors, (5820), 341 states have call successors, (341), 185 states have call predecessors, (341), 222 states have return successors, (450), 364 states have call predecessors, (450), 338 states have call successors, (450) [2022-07-19 20:35:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 6611 transitions. [2022-07-19 20:35:03,407 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 6611 transitions. Word has length 168 [2022-07-19 20:35:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 4620 states and 6611 transitions. [2022-07-19 20:35:03,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 6611 transitions. [2022-07-19 20:35:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:03,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:03,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:03,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 20:35:03,411 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:03,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:03,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2144584354, now seen corresponding path program 1 times [2022-07-19 20:35:03,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:03,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950312139] [2022-07-19 20:35:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:03,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:03,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:03,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:03,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950312139] [2022-07-19 20:35:03,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950312139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:03,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:03,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313307471] [2022-07-19 20:35:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:03,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:03,525 INFO L87 Difference]: Start difference. First operand 4620 states and 6611 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:05,045 INFO L93 Difference]: Finished difference Result 8787 states and 13290 transitions. [2022-07-19 20:35:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:05,058 INFO L225 Difference]: With dead ends: 8787 [2022-07-19 20:35:05,058 INFO L226 Difference]: Without dead ends: 5750 [2022-07-19 20:35:05,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:05,065 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1467 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:05,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1572 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:35:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2022-07-19 20:35:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 4620. [2022-07-19 20:35:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 4055 states have (on average 1.4330456226880395) internal successors, (5811), 4078 states have internal predecessors, (5811), 341 states have call successors, (341), 185 states have call predecessors, (341), 222 states have return successors, (450), 364 states have call predecessors, (450), 338 states have call successors, (450) [2022-07-19 20:35:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 6602 transitions. [2022-07-19 20:35:05,385 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 6602 transitions. Word has length 168 [2022-07-19 20:35:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:05,385 INFO L495 AbstractCegarLoop]: Abstraction has 4620 states and 6602 transitions. [2022-07-19 20:35:05,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 6602 transitions. [2022-07-19 20:35:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:05,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:05,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 20:35:05,388 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash 14499740, now seen corresponding path program 1 times [2022-07-19 20:35:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273205928] [2022-07-19 20:35:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:05,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273205928] [2022-07-19 20:35:05,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273205928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:05,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:05,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404552389] [2022-07-19 20:35:05,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:05,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:05,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:05,478 INFO L87 Difference]: Start difference. First operand 4620 states and 6602 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:08,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:08,703 INFO L93 Difference]: Finished difference Result 12295 states and 18776 transitions. [2022-07-19 20:35:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:35:08,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:08,726 INFO L225 Difference]: With dead ends: 12295 [2022-07-19 20:35:08,727 INFO L226 Difference]: Without dead ends: 9258 [2022-07-19 20:35:08,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:35:08,740 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 1663 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 2990 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:08,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 3058 Invalid, 3111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2990 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 20:35:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2022-07-19 20:35:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 7318. [2022-07-19 20:35:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 6537 states have (on average 1.4763653051858652) internal successors, (9651), 6568 states have internal predecessors, (9651), 501 states have call successors, (501), 233 states have call predecessors, (501), 278 states have return successors, (672), 532 states have call predecessors, (672), 498 states have call successors, (672) [2022-07-19 20:35:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 10824 transitions. [2022-07-19 20:35:09,307 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 10824 transitions. Word has length 168 [2022-07-19 20:35:09,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:09,307 INFO L495 AbstractCegarLoop]: Abstraction has 7318 states and 10824 transitions. [2022-07-19 20:35:09,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 10824 transitions. [2022-07-19 20:35:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:09,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:09,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:09,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 20:35:09,311 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 84147614, now seen corresponding path program 1 times [2022-07-19 20:35:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:09,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398506410] [2022-07-19 20:35:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:09,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398506410] [2022-07-19 20:35:09,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398506410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:09,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:09,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193571425] [2022-07-19 20:35:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:09,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:09,413 INFO L87 Difference]: Start difference. First operand 7318 states and 10824 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:11,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:11,372 INFO L93 Difference]: Finished difference Result 15041 states and 23165 transitions. [2022-07-19 20:35:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:11,393 INFO L225 Difference]: With dead ends: 15041 [2022-07-19 20:35:11,393 INFO L226 Difference]: Without dead ends: 9306 [2022-07-19 20:35:11,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:11,403 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1467 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:11,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1561 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:35:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9306 states. [2022-07-19 20:35:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9306 to 7318. [2022-07-19 20:35:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 6537 states have (on average 1.4737647238794553) internal successors, (9634), 6568 states have internal predecessors, (9634), 501 states have call successors, (501), 233 states have call predecessors, (501), 278 states have return successors, (672), 532 states have call predecessors, (672), 498 states have call successors, (672) [2022-07-19 20:35:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 10807 transitions. [2022-07-19 20:35:12,026 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 10807 transitions. Word has length 168 [2022-07-19 20:35:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:12,026 INFO L495 AbstractCegarLoop]: Abstraction has 7318 states and 10807 transitions. [2022-07-19 20:35:12,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 10807 transitions. [2022-07-19 20:35:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:12,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:12,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:12,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 20:35:12,029 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:12,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1483101216, now seen corresponding path program 1 times [2022-07-19 20:35:12,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:12,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572030789] [2022-07-19 20:35:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:12,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:12,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:12,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:12,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572030789] [2022-07-19 20:35:12,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572030789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:12,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:12,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:12,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786385224] [2022-07-19 20:35:12,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:12,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:12,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:12,126 INFO L87 Difference]: Start difference. First operand 7318 states and 10807 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:14,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:14,307 INFO L93 Difference]: Finished difference Result 15023 states and 23078 transitions. [2022-07-19 20:35:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:14,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:14,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:14,326 INFO L225 Difference]: With dead ends: 15023 [2022-07-19 20:35:14,327 INFO L226 Difference]: Without dead ends: 9288 [2022-07-19 20:35:14,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:14,335 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1257 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:14,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 1796 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:35:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2022-07-19 20:35:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 7318. [2022-07-19 20:35:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 6537 states have (on average 1.4711641425730457) internal successors, (9617), 6568 states have internal predecessors, (9617), 501 states have call successors, (501), 233 states have call predecessors, (501), 278 states have return successors, (672), 532 states have call predecessors, (672), 498 states have call successors, (672) [2022-07-19 20:35:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 10790 transitions. [2022-07-19 20:35:14,920 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 10790 transitions. Word has length 168 [2022-07-19 20:35:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:14,922 INFO L495 AbstractCegarLoop]: Abstraction has 7318 states and 10790 transitions. [2022-07-19 20:35:14,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 10790 transitions. [2022-07-19 20:35:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:14,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:14,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:14,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 20:35:14,926 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:14,927 INFO L85 PathProgramCache]: Analyzing trace with hash -134339234, now seen corresponding path program 1 times [2022-07-19 20:35:14,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:14,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086246755] [2022-07-19 20:35:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:14,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:15,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:15,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086246755] [2022-07-19 20:35:15,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086246755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:15,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:15,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539288221] [2022-07-19 20:35:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:15,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:15,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:15,018 INFO L87 Difference]: Start difference. First operand 7318 states and 10790 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:19,891 INFO L93 Difference]: Finished difference Result 24409 states and 37658 transitions. [2022-07-19 20:35:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:35:19,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:19,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:19,933 INFO L225 Difference]: With dead ends: 24409 [2022-07-19 20:35:19,933 INFO L226 Difference]: Without dead ends: 18674 [2022-07-19 20:35:19,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:35:19,947 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 2131 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:19,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 2231 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:35:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18674 states. [2022-07-19 20:35:21,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18674 to 12570. [2022-07-19 20:35:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12570 states, 11373 states have (on average 1.4976699199859316) internal successors, (17033), 11420 states have internal predecessors, (17033), 805 states have call successors, (805), 329 states have call predecessors, (805), 390 states have return successors, (1154), 852 states have call predecessors, (1154), 802 states have call successors, (1154) [2022-07-19 20:35:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12570 states to 12570 states and 18992 transitions. [2022-07-19 20:35:21,132 INFO L78 Accepts]: Start accepts. Automaton has 12570 states and 18992 transitions. Word has length 168 [2022-07-19 20:35:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:21,133 INFO L495 AbstractCegarLoop]: Abstraction has 12570 states and 18992 transitions. [2022-07-19 20:35:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 12570 states and 18992 transitions. [2022-07-19 20:35:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:21,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:21,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:21,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 20:35:21,139 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash 229127264, now seen corresponding path program 1 times [2022-07-19 20:35:21,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:21,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393521855] [2022-07-19 20:35:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:21,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:21,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:21,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393521855] [2022-07-19 20:35:21,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393521855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:21,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:21,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006623706] [2022-07-19 20:35:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:21,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:21,271 INFO L87 Difference]: Start difference. First operand 12570 states and 18992 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:28,764 INFO L93 Difference]: Finished difference Result 45291 states and 70518 transitions. [2022-07-19 20:35:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:35:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:28,845 INFO L225 Difference]: With dead ends: 45291 [2022-07-19 20:35:28,845 INFO L226 Difference]: Without dead ends: 34304 [2022-07-19 20:35:28,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:35:28,872 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 1736 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 3511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:28,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 3178 Invalid, 3511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3388 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 20:35:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34304 states. [2022-07-19 20:35:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34304 to 23211. [2022-07-19 20:35:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23211 states, 21198 states have (on average 1.5168883856967639) internal successors, (32155), 21277 states have internal predecessors, (32155), 1397 states have call successors, (1397), 521 states have call predecessors, (1397), 614 states have return successors, (2264), 1476 states have call predecessors, (2264), 1394 states have call successors, (2264) [2022-07-19 20:35:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23211 states to 23211 states and 35816 transitions. [2022-07-19 20:35:31,355 INFO L78 Accepts]: Start accepts. Automaton has 23211 states and 35816 transitions. Word has length 168 [2022-07-19 20:35:31,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:31,356 INFO L495 AbstractCegarLoop]: Abstraction has 23211 states and 35816 transitions. [2022-07-19 20:35:31,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23211 states and 35816 transitions. [2022-07-19 20:35:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:31,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:31,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:31,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 20:35:31,365 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 517946654, now seen corresponding path program 1 times [2022-07-19 20:35:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:31,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924662572] [2022-07-19 20:35:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:31,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:31,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924662572] [2022-07-19 20:35:31,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924662572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:31,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:31,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:31,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285514222] [2022-07-19 20:35:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:31,483 INFO L87 Difference]: Start difference. First operand 23211 states and 35816 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:43,482 INFO L93 Difference]: Finished difference Result 86906 states and 136764 transitions. [2022-07-19 20:35:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:35:43,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:35:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:43,661 INFO L225 Difference]: With dead ends: 86906 [2022-07-19 20:35:43,661 INFO L226 Difference]: Without dead ends: 65278 [2022-07-19 20:35:43,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:35:43,720 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 1972 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:43,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 3017 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2911 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:35:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65278 states. [2022-07-19 20:35:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65278 to 44460. [2022-07-19 20:35:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44460 states, 40847 states have (on average 1.5283619360050922) internal successors, (62429), 40990 states have internal predecessors, (62429), 2549 states have call successors, (2549), 905 states have call predecessors, (2549), 1062 states have return successors, (4938), 2692 states have call predecessors, (4938), 2546 states have call successors, (4938) [2022-07-19 20:35:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44460 states to 44460 states and 69916 transitions. [2022-07-19 20:35:48,478 INFO L78 Accepts]: Start accepts. Automaton has 44460 states and 69916 transitions. Word has length 168 [2022-07-19 20:35:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:48,478 INFO L495 AbstractCegarLoop]: Abstraction has 44460 states and 69916 transitions. [2022-07-19 20:35:48,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 44460 states and 69916 transitions. [2022-07-19 20:35:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:35:48,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:48,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:48,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 20:35:48,493 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash -26925920, now seen corresponding path program 1 times [2022-07-19 20:35:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:48,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682293860] [2022-07-19 20:35:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:48,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:35:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:48,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:35:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:35:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:48,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:35:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:48,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:48,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682293860] [2022-07-19 20:35:48,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682293860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:48,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:48,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:48,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488984053] [2022-07-19 20:35:48,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:48,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:48,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:48,591 INFO L87 Difference]: Start difference. First operand 44460 states and 69916 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:10,230 INFO L93 Difference]: Finished difference Result 168953 states and 269314 transitions. [2022-07-19 20:36:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:36:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:36:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:10,659 INFO L225 Difference]: With dead ends: 168953 [2022-07-19 20:36:10,659 INFO L226 Difference]: Without dead ends: 126076 [2022-07-19 20:36:10,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:36:10,780 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 1932 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:10,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1972 Valid, 3012 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:36:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126076 states. [2022-07-19 20:36:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126076 to 86893. [2022-07-19 20:36:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86893 states, 80144 states have (on average 1.535224096626073) internal successors, (123039), 80415 states have internal predecessors, (123039), 4789 states have call successors, (4789), 1673 states have call predecessors, (4789), 1958 states have return successors, (11680), 5060 states have call predecessors, (11680), 4786 states have call successors, (11680) [2022-07-19 20:36:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86893 states to 86893 states and 139508 transitions. [2022-07-19 20:36:20,902 INFO L78 Accepts]: Start accepts. Automaton has 86893 states and 139508 transitions. Word has length 168 [2022-07-19 20:36:20,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:20,903 INFO L495 AbstractCegarLoop]: Abstraction has 86893 states and 139508 transitions. [2022-07-19 20:36:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 86893 states and 139508 transitions. [2022-07-19 20:36:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:36:21,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:21,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:21,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 20:36:21,092 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 648234206, now seen corresponding path program 1 times [2022-07-19 20:36:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:21,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171065035] [2022-07-19 20:36:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:21,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:36:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:36:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:36:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:36:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:21,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171065035] [2022-07-19 20:36:21,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171065035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:21,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:21,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:21,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168141944] [2022-07-19 20:36:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:21,220 INFO L87 Difference]: Start difference. First operand 86893 states and 139508 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:03,745 INFO L93 Difference]: Finished difference Result 330680 states and 536472 transitions. [2022-07-19 20:37:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:03,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-19 20:37:03,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:04,689 INFO L225 Difference]: With dead ends: 330680 [2022-07-19 20:37:04,689 INFO L226 Difference]: Without dead ends: 245370 [2022-07-19 20:37:04,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:04,912 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 1706 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 3256 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:04,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 3113 Invalid, 3382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 3256 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 20:37:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245370 states. [2022-07-19 20:37:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245370 to 171630. [2022-07-19 20:37:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171630 states, 158737 states have (on average 1.5395591450008506) internal successors, (244385), 159264 states have internal predecessors, (244385), 9141 states have call successors, (9141), 3209 states have call predecessors, (9141), 3750 states have return successors, (29410), 9668 states have call predecessors, (29410), 9138 states have call successors, (29410) [2022-07-19 20:37:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171630 states to 171630 states and 282936 transitions. [2022-07-19 20:37:25,919 INFO L78 Accepts]: Start accepts. Automaton has 171630 states and 282936 transitions. Word has length 168 [2022-07-19 20:37:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:25,920 INFO L495 AbstractCegarLoop]: Abstraction has 171630 states and 282936 transitions. [2022-07-19 20:37:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 171630 states and 282936 transitions. [2022-07-19 20:37:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 20:37:25,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:25,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:25,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 20:37:25,973 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash -299817760, now seen corresponding path program 1 times [2022-07-19 20:37:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:25,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696113093] [2022-07-19 20:37:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:37:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:37:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:37:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:37:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:26,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:26,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696113093] [2022-07-19 20:37:26,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696113093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:26,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:26,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40390048] [2022-07-19 20:37:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:26,067 INFO L87 Difference]: Start difference. First operand 171630 states and 282936 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)