./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_1.cil-2+token_ring.13.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 0c76345a7418e3e3e542d36688efe541ee3690f4974296017bb3a3a18fafce6e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:29:36,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:29:36,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:29:36,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:29:36,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:29:36,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:29:36,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:29:36,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:29:36,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:29:36,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:29:36,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:29:36,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:29:36,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:29:36,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:29:36,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:29:36,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:29:36,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:29:36,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:29:36,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:29:36,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:29:36,749 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:29:36,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:29:36,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:29:36,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:29:36,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:29:36,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:29:36,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:29:36,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:29:36,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:29:36,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:29:36,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:29:36,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:29:36,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:29:36,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:29:36,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:29:36,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:29:36,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:29:36,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:29:36,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:29:36,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:29:36,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:29:36,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:29:36,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:29:36,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:29:36,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:29:36,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:29:36,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:29:36,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:29:36,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:29:36,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:29:36,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:29:36,801 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:29:36,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:29:36,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:29:36,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:29:36,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:29:36,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:29:36,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:29:36,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:29:36,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:29:36,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:29:36,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:29:36,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:29:36,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:29:36,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:29:36,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:29:36,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:29:36,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:29:36,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:29:36,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:29:36,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:29:36,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:29:36,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:29:36,807 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:29:36,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:29:36,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:29:36,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c76345a7418e3e3e542d36688efe541ee3690f4974296017bb3a3a18fafce6e [2022-07-12 09:29:37,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:29:37,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:29:37,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:29:37,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:29:37,045 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:29:37,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2022-07-12 09:29:37,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2876a35a8/d013bb2f1ddc4fd888438426965fcf30/FLAG3674eda50 [2022-07-12 09:29:37,558 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:29:37,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2022-07-12 09:29:37,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2876a35a8/d013bb2f1ddc4fd888438426965fcf30/FLAG3674eda50 [2022-07-12 09:29:37,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2876a35a8/d013bb2f1ddc4fd888438426965fcf30 [2022-07-12 09:29:37,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:29:37,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:29:37,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:29:37,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:29:37,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:29:37,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:29:37" (1/1) ... [2022-07-12 09:29:37,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58cd2cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:37, skipping insertion in model container [2022-07-12 09:29:37,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:29:37" (1/1) ... [2022-07-12 09:29:37,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:29:37,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:29:37,798 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_1.cil-2+token_ring.13.cil-1.c[913,926] [2022-07-12 09:29:37,831 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_1.cil-2+token_ring.13.cil-1.c[5977,5990] [2022-07-12 09:29:37,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:29:37,959 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:29:37,973 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_1.cil-2+token_ring.13.cil-1.c[913,926] [2022-07-12 09:29:37,983 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_1.cil-2+token_ring.13.cil-1.c[5977,5990] [2022-07-12 09:29:38,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:29:38,047 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:29:38,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38 WrapperNode [2022-07-12 09:29:38,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:29:38,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:29:38,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:29:38,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:29:38,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,127 INFO L137 Inliner]: procedures = 74, calls = 88, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1118 [2022-07-12 09:29:38,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:29:38,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:29:38,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:29:38,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:29:38,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:29:38,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:29:38,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:29:38,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:29:38,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (1/1) ... [2022-07-12 09:29:38,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:29:38,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:38,216 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) [2022-07-12 09:29:38,231 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 [2022-07-12 09:29:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:29:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:29:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:29:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-12 09:29:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-12 09:29:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:29:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:29:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:29:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:29:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:29:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:29:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:29:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:29:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:29:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:29:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:29:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:29:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:29:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:29:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:29:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:29:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:29:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:29:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:29:38,380 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:29:38,381 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:29:39,153 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:29:39,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:29:39,169 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-12 09:29:39,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:29:39 BoogieIcfgContainer [2022-07-12 09:29:39,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:29:39,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:29:39,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:29:39,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:29:39,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:29:37" (1/3) ... [2022-07-12 09:29:39,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6418df84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:29:39, skipping insertion in model container [2022-07-12 09:29:39,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:38" (2/3) ... [2022-07-12 09:29:39,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6418df84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:29:39, skipping insertion in model container [2022-07-12 09:29:39,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:29:39" (3/3) ... [2022-07-12 09:29:39,182 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2022-07-12 09:29:39,200 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:29:39,201 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:29:39,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:29:39,271 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@7379494e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66631a1b [2022-07-12 09:29:39,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:29:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 439 states have (on average 1.6560364464692483) internal successors, (727), 446 states have internal predecessors, (727), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-12 09:29:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 09:29:39,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:39,291 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] [2022-07-12 09:29:39,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash 657340763, now seen corresponding path program 1 times [2022-07-12 09:29:39,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:39,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034943659] [2022-07-12 09:29:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:39,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:39,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 09:29:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:39,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034943659] [2022-07-12 09:29:39,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034943659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:39,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:39,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518433977] [2022-07-12 09:29:39,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:39,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:39,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:39,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:39,618 INFO L87 Difference]: Start difference. First operand has 487 states, 439 states have (on average 1.6560364464692483) internal successors, (727), 446 states have internal predecessors, (727), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 09:29:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:40,212 INFO L93 Difference]: Finished difference Result 955 states and 1559 transitions. [2022-07-12 09:29:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:40,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-07-12 09:29:40,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:40,235 INFO L225 Difference]: With dead ends: 955 [2022-07-12 09:29:40,236 INFO L226 Difference]: Without dead ends: 485 [2022-07-12 09:29:40,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:40,244 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 407 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:40,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1455 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:29:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-12 09:29:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 476. [2022-07-12 09:29:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 431 states have (on average 1.5638051044083527) internal successors, (674), 435 states have internal predecessors, (674), 35 states have call successors, (35), 10 states have call predecessors, (35), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-12 09:29:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 740 transitions. [2022-07-12 09:29:40,318 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 740 transitions. Word has length 44 [2022-07-12 09:29:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:40,319 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 740 transitions. [2022-07-12 09:29:40,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 09:29:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 740 transitions. [2022-07-12 09:29:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 09:29:40,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:40,330 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] [2022-07-12 09:29:40,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:29:40,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:40,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1792259367, now seen corresponding path program 1 times [2022-07-12 09:29:40,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:40,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654142332] [2022-07-12 09:29:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 09:29:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:40,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654142332] [2022-07-12 09:29:40,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654142332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:40,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:40,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461112572] [2022-07-12 09:29:40,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:40,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:40,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:40,419 INFO L87 Difference]: Start difference. First operand 476 states and 740 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:40,598 INFO L93 Difference]: Finished difference Result 608 states and 925 transitions. [2022-07-12 09:29:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-12 09:29:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:40,602 INFO L225 Difference]: With dead ends: 608 [2022-07-12 09:29:40,602 INFO L226 Difference]: Without dead ends: 546 [2022-07-12 09:29:40,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:40,604 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1008 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:40,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1177 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-07-12 09:29:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2022-07-12 09:29:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 488 states have (on average 1.5368852459016393) internal successors, (750), 493 states have internal predecessors, (750), 39 states have call successors, (39), 12 states have call predecessors, (39), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-12 09:29:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 830 transitions. [2022-07-12 09:29:40,634 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 830 transitions. Word has length 44 [2022-07-12 09:29:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:40,635 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 830 transitions. [2022-07-12 09:29:40,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 830 transitions. [2022-07-12 09:29:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:29:40,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:40,637 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] [2022-07-12 09:29:40,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:29:40,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1280815605, now seen corresponding path program 1 times [2022-07-12 09:29:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87684675] [2022-07-12 09:29:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:40,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:40,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:29:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:40,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87684675] [2022-07-12 09:29:40,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87684675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:40,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:40,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802450335] [2022-07-12 09:29:40,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:40,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:40,728 INFO L87 Difference]: Start difference. First operand 540 states and 830 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:41,207 INFO L93 Difference]: Finished difference Result 788 states and 1170 transitions. [2022-07-12 09:29:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:29:41,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:41,211 INFO L225 Difference]: With dead ends: 788 [2022-07-12 09:29:41,212 INFO L226 Difference]: Without dead ends: 664 [2022-07-12 09:29:41,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:41,218 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 388 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:41,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1559 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:29:41,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-12 09:29:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 607. [2022-07-12 09:29:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 549 states have (on average 1.5191256830601092) internal successors, (834), 554 states have internal predecessors, (834), 42 states have call successors, (42), 15 states have call predecessors, (42), 14 states have return successors, (44), 38 states have call predecessors, (44), 38 states have call successors, (44) [2022-07-12 09:29:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 920 transitions. [2022-07-12 09:29:41,263 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 920 transitions. Word has length 45 [2022-07-12 09:29:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:41,263 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 920 transitions. [2022-07-12 09:29:41,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 920 transitions. [2022-07-12 09:29:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:29:41,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:41,267 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] [2022-07-12 09:29:41,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:29:41,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:41,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:41,268 INFO L85 PathProgramCache]: Analyzing trace with hash -3541856, now seen corresponding path program 1 times [2022-07-12 09:29:41,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:41,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92813620] [2022-07-12 09:29:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:41,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:29:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:41,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:41,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92813620] [2022-07-12 09:29:41,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92813620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:41,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:41,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:41,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099253964] [2022-07-12 09:29:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:41,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:41,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:41,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:41,359 INFO L87 Difference]: Start difference. First operand 607 states and 920 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:41,537 INFO L93 Difference]: Finished difference Result 1015 states and 1479 transitions. [2022-07-12 09:29:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:41,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:29:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:41,542 INFO L225 Difference]: With dead ends: 1015 [2022-07-12 09:29:41,542 INFO L226 Difference]: Without dead ends: 824 [2022-07-12 09:29:41,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:41,544 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 1025 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:41,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1202 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-07-12 09:29:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 772. [2022-07-12 09:29:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 695 states have (on average 1.4733812949640288) internal successors, (1024), 703 states have internal predecessors, (1024), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (61), 47 states have call predecessors, (61), 49 states have call successors, (61) [2022-07-12 09:29:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1138 transitions. [2022-07-12 09:29:41,578 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1138 transitions. Word has length 45 [2022-07-12 09:29:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:41,578 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1138 transitions. [2022-07-12 09:29:41,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1138 transitions. [2022-07-12 09:29:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 09:29:41,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:41,580 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] [2022-07-12 09:29:41,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:29:41,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1415426807, now seen corresponding path program 1 times [2022-07-12 09:29:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:41,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483252085] [2022-07-12 09:29:41,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:41,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:29:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:29:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:29:41,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:41,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483252085] [2022-07-12 09:29:41,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483252085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:41,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:41,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:41,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815588307] [2022-07-12 09:29:41,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:41,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:41,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:41,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:41,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:41,632 INFO L87 Difference]: Start difference. First operand 772 states and 1138 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:42,107 INFO L93 Difference]: Finished difference Result 1116 states and 1599 transitions. [2022-07-12 09:29:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:42,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-12 09:29:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:42,114 INFO L225 Difference]: With dead ends: 1116 [2022-07-12 09:29:42,114 INFO L226 Difference]: Without dead ends: 879 [2022-07-12 09:29:42,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:42,116 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 372 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:42,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1612 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:29:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-07-12 09:29:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 841. [2022-07-12 09:29:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 755 states have (on average 1.4490066225165563) internal successors, (1094), 764 states have internal predecessors, (1094), 58 states have call successors, (58), 25 states have call predecessors, (58), 26 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2022-07-12 09:29:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1222 transitions. [2022-07-12 09:29:42,154 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1222 transitions. Word has length 62 [2022-07-12 09:29:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:42,154 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1222 transitions. [2022-07-12 09:29:42,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1222 transitions. [2022-07-12 09:29:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:29:42,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:42,156 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] [2022-07-12 09:29:42,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:29:42,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -558830938, now seen corresponding path program 1 times [2022-07-12 09:29:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:42,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613461461] [2022-07-12 09:29:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:29:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 09:29:42,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:42,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613461461] [2022-07-12 09:29:42,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613461461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:42,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:42,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:42,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976806409] [2022-07-12 09:29:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:42,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:42,215 INFO L87 Difference]: Start difference. First operand 841 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:42,386 INFO L93 Difference]: Finished difference Result 1392 states and 1944 transitions. [2022-07-12 09:29:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:42,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-12 09:29:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:42,391 INFO L225 Difference]: With dead ends: 1392 [2022-07-12 09:29:42,391 INFO L226 Difference]: Without dead ends: 1014 [2022-07-12 09:29:42,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:42,393 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1012 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:42,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1199 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-07-12 09:29:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 959. [2022-07-12 09:29:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 860 states have (on average 1.4186046511627908) internal successors, (1220), 870 states have internal predecessors, (1220), 65 states have call successors, (65), 30 states have call predecessors, (65), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2022-07-12 09:29:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1366 transitions. [2022-07-12 09:29:42,436 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1366 transitions. Word has length 67 [2022-07-12 09:29:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:42,436 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1366 transitions. [2022-07-12 09:29:42,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1366 transitions. [2022-07-12 09:29:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:29:42,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:42,438 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:29:42,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:29:42,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1719872919, now seen corresponding path program 1 times [2022-07-12 09:29:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:42,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364992442] [2022-07-12 09:29:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:42,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:29:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 09:29:42,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:42,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364992442] [2022-07-12 09:29:42,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364992442] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:42,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133025692] [2022-07-12 09:29:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:42,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:42,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:42,531 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) [2022-07-12 09:29:42,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:29:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:42,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:29:42,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:29:42,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:29:42,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133025692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:42,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:29:42,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:29:42,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441164979] [2022-07-12 09:29:42,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:42,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:29:42,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:42,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:29:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:42,708 INFO L87 Difference]: Start difference. First operand 959 states and 1366 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:42,783 INFO L93 Difference]: Finished difference Result 1402 states and 1961 transitions. [2022-07-12 09:29:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:29:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-07-12 09:29:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:42,788 INFO L225 Difference]: With dead ends: 1402 [2022-07-12 09:29:42,789 INFO L226 Difference]: Without dead ends: 957 [2022-07-12 09:29:42,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:42,791 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 72 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:42,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1502 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:29:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-07-12 09:29:42,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 913. [2022-07-12 09:29:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 820 states have (on average 1.4121951219512194) internal successors, (1158), 830 states have internal predecessors, (1158), 61 states have call successors, (61), 28 states have call predecessors, (61), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2022-07-12 09:29:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1294 transitions. [2022-07-12 09:29:42,827 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1294 transitions. Word has length 68 [2022-07-12 09:29:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:42,827 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1294 transitions. [2022-07-12 09:29:42,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1294 transitions. [2022-07-12 09:29:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:29:42,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:42,829 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:29:42,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:43,048 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 460098856, now seen corresponding path program 1 times [2022-07-12 09:29:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:43,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327588503] [2022-07-12 09:29:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:29:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:29:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327588503] [2022-07-12 09:29:43,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327588503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059580157] [2022-07-12 09:29:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:43,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:43,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:43,128 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) [2022-07-12 09:29:43,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:29:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 09:29:43,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:43,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:29:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:43,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059580157] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:43,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 09:29:43,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-12 09:29:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474975762] [2022-07-12 09:29:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:43,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:43,369 INFO L87 Difference]: Start difference. First operand 913 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:43,514 INFO L93 Difference]: Finished difference Result 964 states and 1355 transitions. [2022-07-12 09:29:43,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:29:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-12 09:29:43,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:43,519 INFO L225 Difference]: With dead ends: 964 [2022-07-12 09:29:43,519 INFO L226 Difference]: Without dead ends: 961 [2022-07-12 09:29:43,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:29:43,520 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1351 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:43,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 827 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-07-12 09:29:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 912. [2022-07-12 09:29:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 820 states have (on average 1.4097560975609755) internal successors, (1156), 829 states have internal predecessors, (1156), 60 states have call successors, (60), 28 states have call predecessors, (60), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2022-07-12 09:29:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1291 transitions. [2022-07-12 09:29:43,558 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1291 transitions. Word has length 68 [2022-07-12 09:29:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:43,559 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1291 transitions. [2022-07-12 09:29:43,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1291 transitions. [2022-07-12 09:29:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 09:29:43,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:43,561 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:29:43,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:43,779 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,SelfDestructingSolverStorable7 [2022-07-12 09:29:43,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1376668361, now seen corresponding path program 1 times [2022-07-12 09:29:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:43,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985133026] [2022-07-12 09:29:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:29:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:29:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:43,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985133026] [2022-07-12 09:29:43,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985133026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948392737] [2022-07-12 09:29:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:43,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:43,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:43,858 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) [2022-07-12 09:29:43,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:29:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:43,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:29:43,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:44,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:29:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:44,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948392737] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:29:44,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:29:44,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-12 09:29:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636491653] [2022-07-12 09:29:44,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:29:44,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 09:29:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 09:29:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:44,284 INFO L87 Difference]: Start difference. First operand 912 states and 1291 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:29:45,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:45,888 INFO L93 Difference]: Finished difference Result 2253 states and 3014 transitions. [2022-07-12 09:29:45,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 09:29:45,889 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-12 09:29:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:45,897 INFO L225 Difference]: With dead ends: 2253 [2022-07-12 09:29:45,898 INFO L226 Difference]: Without dead ends: 1857 [2022-07-12 09:29:45,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 09:29:45,902 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 2009 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:45,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 3878 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:29:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2022-07-12 09:29:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1276. [2022-07-12 09:29:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1148 states have (on average 1.3562717770034842) internal successors, (1557), 1163 states have internal predecessors, (1557), 79 states have call successors, (79), 41 states have call predecessors, (79), 47 states have return successors, (106), 72 states have call predecessors, (106), 76 states have call successors, (106) [2022-07-12 09:29:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1742 transitions. [2022-07-12 09:29:45,978 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1742 transitions. Word has length 69 [2022-07-12 09:29:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:45,978 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1742 transitions. [2022-07-12 09:29:45,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:29:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1742 transitions. [2022-07-12 09:29:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 09:29:45,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:45,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:29:46,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:46,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:46,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:46,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1823241683, now seen corresponding path program 1 times [2022-07-12 09:29:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:46,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347614327] [2022-07-12 09:29:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:29:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 09:29:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 09:29:46,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:46,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347614327] [2022-07-12 09:29:46,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347614327] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:46,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665605585] [2022-07-12 09:29:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:46,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:46,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:29:46,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:29:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:29:46,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:46,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:29:46,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665605585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:46,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:29:46,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:29:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073240919] [2022-07-12 09:29:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:29:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:29:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:46,434 INFO L87 Difference]: Start difference. First operand 1276 states and 1742 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:29:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:46,488 INFO L93 Difference]: Finished difference Result 1888 states and 2520 transitions. [2022-07-12 09:29:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:29:46,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-12 09:29:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:46,494 INFO L225 Difference]: With dead ends: 1888 [2022-07-12 09:29:46,494 INFO L226 Difference]: Without dead ends: 1216 [2022-07-12 09:29:46,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:46,496 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 699 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:46,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 841 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:29:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-07-12 09:29:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1210. [2022-07-12 09:29:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1089 states have (on average 1.3535353535353536) internal successors, (1474), 1104 states have internal predecessors, (1474), 76 states have call successors, (76), 38 states have call predecessors, (76), 43 states have return successors, (101), 68 states have call predecessors, (101), 73 states have call successors, (101) [2022-07-12 09:29:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1651 transitions. [2022-07-12 09:29:46,574 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1651 transitions. Word has length 88 [2022-07-12 09:29:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:46,575 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1651 transitions. [2022-07-12 09:29:46,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:29:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1651 transitions. [2022-07-12 09:29:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 09:29:46,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:46,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:46,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:46,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:46,791 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:46,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash -418359059, now seen corresponding path program 1 times [2022-07-12 09:29:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:46,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097491787] [2022-07-12 09:29:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:46,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 09:29:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 09:29:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:29:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 09:29:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:46,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097491787] [2022-07-12 09:29:46,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097491787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:46,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811802873] [2022-07-12 09:29:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:46,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:46,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:29:46,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:29:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:46,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:29:46,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:29:47,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:29:47,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811802873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:47,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:29:47,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:29:47,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695869993] [2022-07-12 09:29:47,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:47,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:29:47,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:29:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:47,014 INFO L87 Difference]: Start difference. First operand 1210 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:29:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:47,054 INFO L93 Difference]: Finished difference Result 1520 states and 2032 transitions. [2022-07-12 09:29:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:29:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-12 09:29:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:47,057 INFO L225 Difference]: With dead ends: 1520 [2022-07-12 09:29:47,057 INFO L226 Difference]: Without dead ends: 410 [2022-07-12 09:29:47,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:47,060 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 60 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:47,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1496 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:29:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-07-12 09:29:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-07-12 09:29:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.585561497326203) internal successors, (593), 376 states have internal predecessors, (593), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-12 09:29:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 649 transitions. [2022-07-12 09:29:47,074 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 649 transitions. Word has length 103 [2022-07-12 09:29:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:47,074 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 649 transitions. [2022-07-12 09:29:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:29:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 649 transitions. [2022-07-12 09:29:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:29:47,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:47,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:47,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:47,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 09:29:47,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:47,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2055015172, now seen corresponding path program 1 times [2022-07-12 09:29:47,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:47,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842109565] [2022-07-12 09:29:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:47,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:29:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:29:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:29:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:47,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:47,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842109565] [2022-07-12 09:29:47,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842109565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:47,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:47,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:29:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402732362] [2022-07-12 09:29:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:47,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:29:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:29:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:47,420 INFO L87 Difference]: Start difference. First operand 410 states and 649 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-12 09:29:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:48,893 INFO L93 Difference]: Finished difference Result 964 states and 1549 transitions. [2022-07-12 09:29:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:29:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-12 09:29:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:48,897 INFO L225 Difference]: With dead ends: 964 [2022-07-12 09:29:48,897 INFO L226 Difference]: Without dead ends: 563 [2022-07-12 09:29:48,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:48,899 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1119 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:48,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1149 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:29:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-12 09:29:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-12 09:29:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5828877005347595) internal successors, (592), 376 states have internal predecessors, (592), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-12 09:29:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 648 transitions. [2022-07-12 09:29:48,941 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 648 transitions. Word has length 190 [2022-07-12 09:29:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:48,942 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 648 transitions. [2022-07-12 09:29:48,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-12 09:29:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 648 transitions. [2022-07-12 09:29:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:29:48,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:48,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:48,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:29:48,944 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:48,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1767612478, now seen corresponding path program 1 times [2022-07-12 09:29:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:48,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695082181] [2022-07-12 09:29:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:48,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:29:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:29:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:29:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:49,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:49,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695082181] [2022-07-12 09:29:49,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695082181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:49,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:49,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:29:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802994114] [2022-07-12 09:29:49,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:49,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:29:49,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:29:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:49,082 INFO L87 Difference]: Start difference. First operand 410 states and 648 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-12 09:29:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:50,522 INFO L93 Difference]: Finished difference Result 956 states and 1532 transitions. [2022-07-12 09:29:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:29:50,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-12 09:29:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:50,526 INFO L225 Difference]: With dead ends: 956 [2022-07-12 09:29:50,526 INFO L226 Difference]: Without dead ends: 563 [2022-07-12 09:29:50,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:50,528 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1110 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:50,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1147 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:29:50,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-12 09:29:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-12 09:29:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5802139037433156) internal successors, (591), 376 states have internal predecessors, (591), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-12 09:29:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 647 transitions. [2022-07-12 09:29:50,554 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 647 transitions. Word has length 190 [2022-07-12 09:29:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:50,554 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 647 transitions. [2022-07-12 09:29:50,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-12 09:29:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 647 transitions. [2022-07-12 09:29:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:29:50,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:50,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:29:50,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1158894208, now seen corresponding path program 1 times [2022-07-12 09:29:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:50,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875290286] [2022-07-12 09:29:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:29:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:29:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:29:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:50,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:50,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875290286] [2022-07-12 09:29:50,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875290286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:50,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:50,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:29:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990847766] [2022-07-12 09:29:50,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:50,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:29:50,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:50,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:29:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:29:50,727 INFO L87 Difference]: Start difference. First operand 410 states and 647 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-12 09:29:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:53,692 INFO L93 Difference]: Finished difference Result 1512 states and 2438 transitions. [2022-07-12 09:29:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:29:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-07-12 09:29:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:53,699 INFO L225 Difference]: With dead ends: 1512 [2022-07-12 09:29:53,699 INFO L226 Difference]: Without dead ends: 1124 [2022-07-12 09:29:53,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:53,701 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1683 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:53,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 1816 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:29:53,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-07-12 09:29:53,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 817. [2022-07-12 09:29:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5930851063829787) internal successors, (1198), 755 states have internal predecessors, (1198), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-12 09:29:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1301 transitions. [2022-07-12 09:29:53,773 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1301 transitions. Word has length 190 [2022-07-12 09:29:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:53,774 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1301 transitions. [2022-07-12 09:29:53,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-12 09:29:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1301 transitions. [2022-07-12 09:29:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:29:53,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:53,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:53,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:29:53,776 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash -650115394, now seen corresponding path program 1 times [2022-07-12 09:29:53,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:53,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393747597] [2022-07-12 09:29:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:29:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:29:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:53,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:29:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:53,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:53,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393747597] [2022-07-12 09:29:53,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393747597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:53,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:53,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21369253] [2022-07-12 09:29:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:53,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:53,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:53,948 INFO L87 Difference]: Start difference. First operand 817 states and 1301 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:29:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:57,257 INFO L93 Difference]: Finished difference Result 2500 states and 4041 transitions. [2022-07-12 09:29:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:29:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:29:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:57,264 INFO L225 Difference]: With dead ends: 2500 [2022-07-12 09:29:57,264 INFO L226 Difference]: Without dead ends: 1705 [2022-07-12 09:29:57,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:29:57,267 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1714 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 3452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:57,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 3189 Invalid, 3452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 09:29:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-12 09:29:57,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1195. [2022-07-12 09:29:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1101 states have (on average 1.586739327883742) internal successors, (1747), 1105 states have internal predecessors, (1747), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-12 09:29:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1896 transitions. [2022-07-12 09:29:57,352 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1896 transitions. Word has length 190 [2022-07-12 09:29:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:57,352 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1896 transitions. [2022-07-12 09:29:57,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:29:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1896 transitions. [2022-07-12 09:29:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:29:57,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:57,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:57,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:29:57,355 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1721601472, now seen corresponding path program 1 times [2022-07-12 09:29:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:57,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822069589] [2022-07-12 09:29:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:57,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:29:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:29:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:29:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:57,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:57,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822069589] [2022-07-12 09:29:57,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822069589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:57,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:57,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840013878] [2022-07-12 09:29:57,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:57,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:57,496 INFO L87 Difference]: Start difference. First operand 1195 states and 1896 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:00,829 INFO L93 Difference]: Finished difference Result 3957 states and 6384 transitions. [2022-07-12 09:30:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:00,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:00,842 INFO L225 Difference]: With dead ends: 3957 [2022-07-12 09:30:00,842 INFO L226 Difference]: Without dead ends: 2784 [2022-07-12 09:30:00,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:00,846 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1711 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:00,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 3181 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 09:30:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-07-12 09:30:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1952. [2022-07-12 09:30:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1800 states have (on average 1.5811111111111111) internal successors, (2846), 1806 states have internal predecessors, (2846), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-12 09:30:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3091 transitions. [2022-07-12 09:30:01,034 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3091 transitions. Word has length 190 [2022-07-12 09:30:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:01,034 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3091 transitions. [2022-07-12 09:30:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3091 transitions. [2022-07-12 09:30:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:01,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:01,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:01,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:30:01,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -3006850, now seen corresponding path program 1 times [2022-07-12 09:30:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:01,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866883953] [2022-07-12 09:30:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:01,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:01,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866883953] [2022-07-12 09:30:01,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866883953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:01,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:01,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013897389] [2022-07-12 09:30:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:01,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:01,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:01,189 INFO L87 Difference]: Start difference. First operand 1952 states and 3091 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:03,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:03,004 INFO L93 Difference]: Finished difference Result 4702 states and 7570 transitions. [2022-07-12 09:30:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:03,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:03,013 INFO L225 Difference]: With dead ends: 4702 [2022-07-12 09:30:03,014 INFO L226 Difference]: Without dead ends: 2772 [2022-07-12 09:30:03,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:03,018 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1216 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:03,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1735 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:30:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2022-07-12 09:30:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1952. [2022-07-12 09:30:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1800 states have (on average 1.5783333333333334) internal successors, (2841), 1806 states have internal predecessors, (2841), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-12 09:30:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3086 transitions. [2022-07-12 09:30:03,190 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3086 transitions. Word has length 190 [2022-07-12 09:30:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:03,190 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3086 transitions. [2022-07-12 09:30:03,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:03,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3086 transitions. [2022-07-12 09:30:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:03,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:03,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:03,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:30:03,193 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash 495549952, now seen corresponding path program 1 times [2022-07-12 09:30:03,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:03,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807816999] [2022-07-12 09:30:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:03,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:03,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807816999] [2022-07-12 09:30:03,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807816999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:03,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:03,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382285261] [2022-07-12 09:30:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:03,345 INFO L87 Difference]: Start difference. First operand 1952 states and 3086 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:06,975 INFO L93 Difference]: Finished difference Result 6747 states and 10817 transitions. [2022-07-12 09:30:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:06,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:06,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:06,989 INFO L225 Difference]: With dead ends: 6747 [2022-07-12 09:30:06,989 INFO L226 Difference]: Without dead ends: 4817 [2022-07-12 09:30:06,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:06,995 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1701 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:06,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 3165 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 09:30:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2022-07-12 09:30:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 3476. [2022-07-12 09:30:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3208 states have (on average 1.5741895261845387) internal successors, (5050), 3218 states have internal predecessors, (5050), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-12 09:30:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 5493 transitions. [2022-07-12 09:30:07,303 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 5493 transitions. Word has length 190 [2022-07-12 09:30:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:07,303 INFO L495 AbstractCegarLoop]: Abstraction has 3476 states and 5493 transitions. [2022-07-12 09:30:07,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 5493 transitions. [2022-07-12 09:30:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:07,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:07,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:07,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:30:07,307 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1899419138, now seen corresponding path program 1 times [2022-07-12 09:30:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:07,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116977836] [2022-07-12 09:30:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:07,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:07,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116977836] [2022-07-12 09:30:07,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116977836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:07,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:07,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516398398] [2022-07-12 09:30:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:07,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:07,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:07,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:07,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:07,456 INFO L87 Difference]: Start difference. First operand 3476 states and 5493 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:09,346 INFO L93 Difference]: Finished difference Result 8301 states and 13310 transitions. [2022-07-12 09:30:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:09,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:09,359 INFO L225 Difference]: With dead ends: 8301 [2022-07-12 09:30:09,360 INFO L226 Difference]: Without dead ends: 4847 [2022-07-12 09:30:09,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:09,368 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1214 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:09,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1726 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:30:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2022-07-12 09:30:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 3476. [2022-07-12 09:30:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3208 states have (on average 1.5713840399002494) internal successors, (5041), 3218 states have internal predecessors, (5041), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-12 09:30:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 5484 transitions. [2022-07-12 09:30:09,641 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 5484 transitions. Word has length 190 [2022-07-12 09:30:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:09,642 INFO L495 AbstractCegarLoop]: Abstraction has 3476 states and 5484 transitions. [2022-07-12 09:30:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 5484 transitions. [2022-07-12 09:30:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:09,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:09,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:30:09,646 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1113421248, now seen corresponding path program 1 times [2022-07-12 09:30:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:09,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125802210] [2022-07-12 09:30:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:09,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:09,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125802210] [2022-07-12 09:30:09,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125802210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:09,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:09,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112627237] [2022-07-12 09:30:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:09,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:09,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:09,805 INFO L87 Difference]: Start difference. First operand 3476 states and 5484 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:13,492 INFO L93 Difference]: Finished difference Result 12341 states and 19704 transitions. [2022-07-12 09:30:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:13,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:13,525 INFO L225 Difference]: With dead ends: 12341 [2022-07-12 09:30:13,525 INFO L226 Difference]: Without dead ends: 8887 [2022-07-12 09:30:13,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:13,536 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 1693 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:13,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3154 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:30:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2022-07-12 09:30:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 6536. [2022-07-12 09:30:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 6036 states have (on average 1.5677601060304838) internal successors, (9463), 6054 states have internal predecessors, (9463), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-12 09:30:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 10320 transitions. [2022-07-12 09:30:14,155 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 10320 transitions. Word has length 190 [2022-07-12 09:30:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:14,156 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 10320 transitions. [2022-07-12 09:30:14,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 10320 transitions. [2022-07-12 09:30:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:14,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:14,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:14,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:30:14,160 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:14,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1780803138, now seen corresponding path program 1 times [2022-07-12 09:30:14,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:14,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114736527] [2022-07-12 09:30:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:14,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:14,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:14,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114736527] [2022-07-12 09:30:14,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114736527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:14,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:14,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:14,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768590276] [2022-07-12 09:30:14,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:14,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:14,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:14,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:14,329 INFO L87 Difference]: Start difference. First operand 6536 states and 10320 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:16,411 INFO L93 Difference]: Finished difference Result 15505 states and 24817 transitions. [2022-07-12 09:30:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:16,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:16,438 INFO L225 Difference]: With dead ends: 15505 [2022-07-12 09:30:16,439 INFO L226 Difference]: Without dead ends: 8991 [2022-07-12 09:30:16,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:16,456 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1470 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:16,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1463 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:30:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8991 states. [2022-07-12 09:30:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8991 to 6536. [2022-07-12 09:30:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 6036 states have (on average 1.5649436713055003) internal successors, (9446), 6054 states have internal predecessors, (9446), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-12 09:30:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 10303 transitions. [2022-07-12 09:30:17,020 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 10303 transitions. Word has length 190 [2022-07-12 09:30:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:17,020 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 10303 transitions. [2022-07-12 09:30:17,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 10303 transitions. [2022-07-12 09:30:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:17,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:17,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:17,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:30:17,025 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash -414425728, now seen corresponding path program 1 times [2022-07-12 09:30:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:17,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060451159] [2022-07-12 09:30:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:17,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:17,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060451159] [2022-07-12 09:30:17,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060451159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:17,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:17,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822914934] [2022-07-12 09:30:17,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:17,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:17,156 INFO L87 Difference]: Start difference. First operand 6536 states and 10303 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:21,908 INFO L93 Difference]: Finished difference Result 23529 states and 37494 transitions. [2022-07-12 09:30:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:21,965 INFO L225 Difference]: With dead ends: 23529 [2022-07-12 09:30:21,965 INFO L226 Difference]: Without dead ends: 17015 [2022-07-12 09:30:21,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:21,988 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 1685 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:21,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 3143 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3278 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 09:30:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17015 states. [2022-07-12 09:30:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17015 to 12686. [2022-07-12 09:30:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12686 states, 11722 states have (on average 1.5620201330830916) internal successors, (18310), 11756 states have internal predecessors, (18310), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-12 09:30:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12686 states to 12686 states and 20049 transitions. [2022-07-12 09:30:23,117 INFO L78 Accepts]: Start accepts. Automaton has 12686 states and 20049 transitions. Word has length 190 [2022-07-12 09:30:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:23,117 INFO L495 AbstractCegarLoop]: Abstraction has 12686 states and 20049 transitions. [2022-07-12 09:30:23,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 12686 states and 20049 transitions. [2022-07-12 09:30:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:23,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:23,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:23,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:30:23,125 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash -69597566, now seen corresponding path program 1 times [2022-07-12 09:30:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953260793] [2022-07-12 09:30:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:23,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:23,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953260793] [2022-07-12 09:30:23,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953260793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:23,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:23,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:23,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228875298] [2022-07-12 09:30:23,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:23,259 INFO L87 Difference]: Start difference. First operand 12686 states and 20049 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:26,623 INFO L93 Difference]: Finished difference Result 29913 states and 47916 transitions. [2022-07-12 09:30:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:26,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:26,678 INFO L225 Difference]: With dead ends: 29913 [2022-07-12 09:30:26,678 INFO L226 Difference]: Without dead ends: 17249 [2022-07-12 09:30:26,703 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 [2022-07-12 09:30:26,704 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1391 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:26,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1496 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:30:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17249 states. [2022-07-12 09:30:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17249 to 12686. [2022-07-12 09:30:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12686 states, 11722 states have (on average 1.559204913837229) internal successors, (18277), 11756 states have internal predecessors, (18277), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-12 09:30:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12686 states to 12686 states and 20016 transitions. [2022-07-12 09:30:27,988 INFO L78 Accepts]: Start accepts. Automaton has 12686 states and 20016 transitions. Word has length 190 [2022-07-12 09:30:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:27,988 INFO L495 AbstractCegarLoop]: Abstraction has 12686 states and 20016 transitions. [2022-07-12 09:30:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 12686 states and 20016 transitions. [2022-07-12 09:30:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:27,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:27,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:27,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:30:27,996 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:27,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash 911357248, now seen corresponding path program 1 times [2022-07-12 09:30:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:27,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386170220] [2022-07-12 09:30:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:27,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:28,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:28,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386170220] [2022-07-12 09:30:28,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386170220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:28,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:28,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511783104] [2022-07-12 09:30:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:28,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:28,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:28,147 INFO L87 Difference]: Start difference. First operand 12686 states and 20016 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:34,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:34,790 INFO L93 Difference]: Finished difference Result 45907 states and 73178 transitions. [2022-07-12 09:30:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:34,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:34,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:34,900 INFO L225 Difference]: With dead ends: 45907 [2022-07-12 09:30:34,900 INFO L226 Difference]: Without dead ends: 33243 [2022-07-12 09:30:34,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:34,942 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 1680 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:34,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 3130 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:30:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33243 states. [2022-07-12 09:30:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33243 to 25048. [2022-07-12 09:30:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25048 states, 23156 states have (on average 1.5567887372603213) internal successors, (36049), 23222 states have internal predecessors, (36049), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-12 09:30:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25048 states to 25048 states and 39714 transitions. [2022-07-12 09:30:37,730 INFO L78 Accepts]: Start accepts. Automaton has 25048 states and 39714 transitions. Word has length 190 [2022-07-12 09:30:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:37,730 INFO L495 AbstractCegarLoop]: Abstraction has 25048 states and 39714 transitions. [2022-07-12 09:30:37,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 25048 states and 39714 transitions. [2022-07-12 09:30:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:37,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:37,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:37,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:30:37,747 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash -858114366, now seen corresponding path program 1 times [2022-07-12 09:30:37,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:37,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247711085] [2022-07-12 09:30:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:37,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:37,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247711085] [2022-07-12 09:30:37,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247711085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:37,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:37,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:37,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237351966] [2022-07-12 09:30:37,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:37,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:37,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:37,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:37,886 INFO L87 Difference]: Start difference. First operand 25048 states and 39714 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:43,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:43,238 INFO L93 Difference]: Finished difference Result 58663 states and 94311 transitions. [2022-07-12 09:30:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:43,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:43,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:43,327 INFO L225 Difference]: With dead ends: 58663 [2022-07-12 09:30:43,327 INFO L226 Difference]: Without dead ends: 33637 [2022-07-12 09:30:43,378 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 [2022-07-12 09:30:43,378 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1391 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:43,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1485 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:30:43,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33637 states. [2022-07-12 09:30:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33637 to 25048. [2022-07-12 09:30:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25048 states, 23156 states have (on average 1.5539816894109517) internal successors, (35984), 23222 states have internal predecessors, (35984), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-12 09:30:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25048 states to 25048 states and 39649 transitions. [2022-07-12 09:30:46,191 INFO L78 Accepts]: Start accepts. Automaton has 25048 states and 39649 transitions. Word has length 190 [2022-07-12 09:30:46,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:46,192 INFO L495 AbstractCegarLoop]: Abstraction has 25048 states and 39649 transitions. [2022-07-12 09:30:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25048 states and 39649 transitions. [2022-07-12 09:30:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:46,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:46,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:46,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:30:46,203 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:46,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2031661252, now seen corresponding path program 1 times [2022-07-12 09:30:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:46,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959072853] [2022-07-12 09:30:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:46,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959072853] [2022-07-12 09:30:46,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959072853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:46,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:46,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894350480] [2022-07-12 09:30:46,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:46,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:46,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:46,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:46,344 INFO L87 Difference]: Start difference. First operand 25048 states and 39649 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:52,132 INFO L93 Difference]: Finished difference Result 58597 states and 93984 transitions. [2022-07-12 09:30:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:52,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:30:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:52,217 INFO L225 Difference]: With dead ends: 58597 [2022-07-12 09:30:52,218 INFO L226 Difference]: Without dead ends: 33571 [2022-07-12 09:30:52,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:30:52,263 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 1208 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:52,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1695 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:30:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33571 states. [2022-07-12 09:30:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33571 to 25048. [2022-07-12 09:30:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25048 states, 23156 states have (on average 1.5511746415615824) internal successors, (35919), 23222 states have internal predecessors, (35919), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-12 09:30:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25048 states to 25048 states and 39584 transitions. [2022-07-12 09:30:55,209 INFO L78 Accepts]: Start accepts. Automaton has 25048 states and 39584 transitions. Word has length 190 [2022-07-12 09:30:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:55,209 INFO L495 AbstractCegarLoop]: Abstraction has 25048 states and 39584 transitions. [2022-07-12 09:30:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:30:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 25048 states and 39584 transitions. [2022-07-12 09:30:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:30:55,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:55,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:55,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:30:55,218 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:55,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash -368972158, now seen corresponding path program 1 times [2022-07-12 09:30:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:55,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251358815] [2022-07-12 09:30:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:30:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:30:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:30:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:30:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251358815] [2022-07-12 09:30:55,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251358815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:55,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:55,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7938464] [2022-07-12 09:30:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:55,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:55,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:55,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:55,373 INFO L87 Difference]: Start difference. First operand 25048 states and 39584 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:31:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:10,966 INFO L93 Difference]: Finished difference Result 101989 states and 162104 transitions. [2022-07-12 09:31:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:31:10,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:31:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:11,169 INFO L225 Difference]: With dead ends: 101989 [2022-07-12 09:31:11,169 INFO L226 Difference]: Without dead ends: 76963 [2022-07-12 09:31:11,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:11,235 INFO L413 NwaCegarLoop]: 1226 mSDtfsCounter, 1783 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 3871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:11,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 3299 Invalid, 3871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 09:31:11,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76963 states. [2022-07-12 09:31:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76963 to 49196. [2022-07-12 09:31:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49196 states, 45512 states have (on average 1.5469985937774653) internal successors, (70407), 45642 states have internal predecessors, (70407), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 902 states have return successors, (5094), 2906 states have call predecessors, (5094), 2779 states have call successors, (5094) [2022-07-12 09:31:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49196 states to 49196 states and 78282 transitions. [2022-07-12 09:31:17,016 INFO L78 Accepts]: Start accepts. Automaton has 49196 states and 78282 transitions. Word has length 190 [2022-07-12 09:31:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:17,016 INFO L495 AbstractCegarLoop]: Abstraction has 49196 states and 78282 transitions. [2022-07-12 09:31:17,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:31:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 49196 states and 78282 transitions. [2022-07-12 09:31:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:31:17,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:17,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:31:17,032 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1077608708, now seen corresponding path program 1 times [2022-07-12 09:31:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302284065] [2022-07-12 09:31:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:31:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:31:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:31:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:17,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302284065] [2022-07-12 09:31:17,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302284065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:17,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:17,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281555176] [2022-07-12 09:31:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:17,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:17,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:17,173 INFO L87 Difference]: Start difference. First operand 49196 states and 78282 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:31:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:45,427 INFO L93 Difference]: Finished difference Result 198935 states and 318484 transitions. [2022-07-12 09:31:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:31:45,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-12 09:31:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:46,078 INFO L225 Difference]: With dead ends: 198935 [2022-07-12 09:31:46,078 INFO L226 Difference]: Without dead ends: 149761 [2022-07-12 09:31:46,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:46,192 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2205 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:46,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 2128 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:31:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149761 states. [2022-07-12 09:31:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149761 to 98061. [2022-07-12 09:31:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98061 states, 90857 states have (on average 1.5473216152855587) internal successors, (140585), 91115 states have internal predecessors, (140585), 5405 states have call successors, (5405), 1543 states have call predecessors, (5405), 1798 states have return successors, (12220), 5658 states have call predecessors, (12220), 5403 states have call successors, (12220) [2022-07-12 09:31:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98061 states to 98061 states and 158210 transitions. [2022-07-12 09:31:58,136 INFO L78 Accepts]: Start accepts. Automaton has 98061 states and 158210 transitions. Word has length 190 [2022-07-12 09:31:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:58,137 INFO L495 AbstractCegarLoop]: Abstraction has 98061 states and 158210 transitions. [2022-07-12 09:31:58,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-12 09:31:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 98061 states and 158210 transitions. [2022-07-12 09:31:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:31:58,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:58,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:58,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 09:31:58,167 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 154441282, now seen corresponding path program 1 times [2022-07-12 09:31:58,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:58,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345952844] [2022-07-12 09:31:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:58,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:31:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:31:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:31:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:31:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:58,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345952844] [2022-07-12 09:31:58,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345952844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:58,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:58,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091859139] [2022-07-12 09:31:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:58,326 INFO L87 Difference]: Start difference. First operand 98061 states and 158210 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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)