./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+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_3.cil+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 0e49baa02682605d5c6b8a86e9e1d38b2cd4076796b3122e76d3b43b5274a0df --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:37:22,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:37:22,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:37:22,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:37:22,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:37:22,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:37:22,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:37:22,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:37:22,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:37:22,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:37:22,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:37:22,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:37:22,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:37:22,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:37:22,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:37:22,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:37:22,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:37:22,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:37:22,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:37:22,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:37:22,792 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:37:22,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:37:22,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:37:22,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:37:22,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:37:22,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:37:22,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:37:22,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:37:22,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:37:22,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:37:22,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:37:22,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:37:22,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:37:22,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:37:22,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:37:22,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:37:22,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:37:22,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:37:22,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:37:22,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:37:22,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:37:22,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:37:22,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:37:22,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:37:22,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:37:22,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:37:22,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:37:22,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:37:22,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:37:22,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:37:22,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:37:22,833 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:37:22,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:37:22,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:37:22,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:37:22,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:37:22,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:37:22,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:37:22,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:37:22,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:37:22,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:37:22,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:37:22,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:37:22,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:37:22,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:37:22,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:37:22,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:37:22,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:37:22,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:37:22,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:37:22,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:37:22,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:37:22,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:37:22,838 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:37:22,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:37:22,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:37:22,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e49baa02682605d5c6b8a86e9e1d38b2cd4076796b3122e76d3b43b5274a0df [2022-07-12 09:37:23,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:37:23,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:37:23,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:37:23,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:37:23,063 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:37:23,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-07-12 09:37:23,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adab222e/2e7f9b312bbe4ffa84a7ba1edceda152/FLAG4baeb99a2 [2022-07-12 09:37:23,486 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:37:23,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-07-12 09:37:23,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adab222e/2e7f9b312bbe4ffa84a7ba1edceda152/FLAG4baeb99a2 [2022-07-12 09:37:23,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adab222e/2e7f9b312bbe4ffa84a7ba1edceda152 [2022-07-12 09:37:23,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:37:23,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:37:23,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:37:23,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:37:23,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:37:23,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:37:23" (1/1) ... [2022-07-12 09:37:23,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575fe930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:23, skipping insertion in model container [2022-07-12 09:37:23,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:37:23" (1/1) ... [2022-07-12 09:37:23,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:37:23,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:37:24,123 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_3.cil+token_ring.13.cil-1.c[911,924] [2022-07-12 09:37:24,172 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_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-07-12 09:37:24,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:37:24,264 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:37:24,278 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_3.cil+token_ring.13.cil-1.c[911,924] [2022-07-12 09:37:24,301 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_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-07-12 09:37:24,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:37:24,368 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:37:24,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24 WrapperNode [2022-07-12 09:37:24,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:37:24,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:37:24,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:37:24,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:37:24,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,440 INFO L137 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1141 [2022-07-12 09:37:24,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:37:24,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:37:24,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:37:24,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:37:24,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:37:24,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:37:24,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:37:24,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:37:24,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:37:24,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:24,545 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 09:37:24,575 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 09:37:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:37:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:37:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:37:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:37:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:37:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:37:24,591 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:37:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:37:24,591 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:37:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:37:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:37:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:37:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:37:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:37:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:37:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:37:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:37:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:37:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:37:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:37:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:37:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:37:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:37:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:37:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:37:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:37:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:37:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:37:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:37:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:37:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:37:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:37:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:37:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:37:24,776 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:37:24,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:37:25,497 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-12 09:37:25,497 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-12 09:37:25,554 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:37:25,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:37:25,568 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-12 09:37:25,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:37:25 BoogieIcfgContainer [2022-07-12 09:37:25,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:37:25,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:37:25,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:37:25,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:37:25,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:37:23" (1/3) ... [2022-07-12 09:37:25,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d3f82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:37:25, skipping insertion in model container [2022-07-12 09:37:25,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (2/3) ... [2022-07-12 09:37:25,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d3f82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:37:25, skipping insertion in model container [2022-07-12 09:37:25,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:37:25" (3/3) ... [2022-07-12 09:37:25,579 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-07-12 09:37:25,589 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:37:25,589 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:37:25,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:37:25,658 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@6a415863, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@733a81d9 [2022-07-12 09:37:25,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:37:25,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 469 states have (on average 1.6460554371002132) internal successors, (772), 477 states have internal predecessors, (772), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-12 09:37:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:25,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:25,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:25,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:25,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1984097588, now seen corresponding path program 1 times [2022-07-12 09:37:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:25,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651331299] [2022-07-12 09:37:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:25,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,970 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 09:37:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:25,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651331299] [2022-07-12 09:37:25,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651331299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:25,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:25,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:37:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135706767] [2022-07-12 09:37:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:25,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:37:25,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:25,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:37:25,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:37:25,995 INFO L87 Difference]: Start difference. First operand has 532 states, 469 states have (on average 1.6460554371002132) internal successors, (772), 477 states have internal predecessors, (772), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:27,003 INFO L93 Difference]: Finished difference Result 1185 states and 1909 transitions. [2022-07-12 09:37:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:27,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:37:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:27,029 INFO L225 Difference]: With dead ends: 1185 [2022-07-12 09:37:27,030 INFO L226 Difference]: Without dead ends: 672 [2022-07-12 09:37:27,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:37:27,036 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 954 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:27,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 3118 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:37:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-12 09:37:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 633. [2022-07-12 09:37:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 551 states have (on average 1.5372050816696914) internal successors, (847), 558 states have internal predecessors, (847), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-12 09:37:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 964 transitions. [2022-07-12 09:37:27,146 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 964 transitions. Word has length 65 [2022-07-12 09:37:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:27,146 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 964 transitions. [2022-07-12 09:37:27,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 964 transitions. [2022-07-12 09:37:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:27,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:27,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:27,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:37:27,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash -631981068, now seen corresponding path program 1 times [2022-07-12 09:37:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:27,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336031964] [2022-07-12 09:37:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,321 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 09:37:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:27,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336031964] [2022-07-12 09:37:27,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336031964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:27,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:27,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:37:27,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668569789] [2022-07-12 09:37:27,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:27,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:37:27,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:37:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:37:27,329 INFO L87 Difference]: Start difference. First operand 633 states and 964 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-12 09:37:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:28,976 INFO L93 Difference]: Finished difference Result 1666 states and 2424 transitions. [2022-07-12 09:37:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:37:28,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-12 09:37:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:28,983 INFO L225 Difference]: With dead ends: 1666 [2022-07-12 09:37:28,984 INFO L226 Difference]: Without dead ends: 1445 [2022-07-12 09:37:28,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:37:28,986 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 4558 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:28,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 2990 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:37:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-07-12 09:37:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1306. [2022-07-12 09:37:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1094 states have (on average 1.4497257769652652) internal successors, (1586), 1109 states have internal predecessors, (1586), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2022-07-12 09:37:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1854 transitions. [2022-07-12 09:37:29,071 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1854 transitions. Word has length 65 [2022-07-12 09:37:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1854 transitions. [2022-07-12 09:37:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-12 09:37:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1854 transitions. [2022-07-12 09:37:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:37:29,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:29,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:37:29,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1785973121, now seen corresponding path program 1 times [2022-07-12 09:37:29,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:29,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001461857] [2022-07-12 09:37:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:37:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:29,225 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 09:37:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:29,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001461857] [2022-07-12 09:37:29,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001461857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:29,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:29,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289216960] [2022-07-12 09:37:29,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:29,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:29,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:29,228 INFO L87 Difference]: Start difference. First operand 1306 states and 1854 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:30,182 INFO L93 Difference]: Finished difference Result 2332 states and 3248 transitions. [2022-07-12 09:37:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:37:30,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:37:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:30,187 INFO L225 Difference]: With dead ends: 2332 [2022-07-12 09:37:30,188 INFO L226 Difference]: Without dead ends: 1444 [2022-07-12 09:37:30,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:30,190 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 709 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:30,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 3543 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:37:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-07-12 09:37:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1336. [2022-07-12 09:37:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1118 states have (on average 1.4373881932021466) internal successors, (1607), 1133 states have internal predecessors, (1607), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2022-07-12 09:37:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1881 transitions. [2022-07-12 09:37:30,248 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1881 transitions. Word has length 66 [2022-07-12 09:37:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:30,249 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1881 transitions. [2022-07-12 09:37:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1881 transitions. [2022-07-12 09:37:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:37:30,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:30,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:30,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:37:30,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1479634877, now seen corresponding path program 1 times [2022-07-12 09:37:30,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:30,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158196841] [2022-07-12 09:37:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:37:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,375 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 09:37:30,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:30,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158196841] [2022-07-12 09:37:30,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158196841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:30,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:30,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:37:30,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210428986] [2022-07-12 09:37:30,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:30,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:37:30,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:30,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:37:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:37:30,378 INFO L87 Difference]: Start difference. First operand 1336 states and 1881 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:37:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:31,993 INFO L93 Difference]: Finished difference Result 3674 states and 5068 transitions. [2022-07-12 09:37:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:37:31,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-12 09:37:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:32,000 INFO L225 Difference]: With dead ends: 3674 [2022-07-12 09:37:32,000 INFO L226 Difference]: Without dead ends: 1579 [2022-07-12 09:37:32,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:37:32,011 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 4149 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4171 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:32,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4171 Valid, 3470 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:37:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2022-07-12 09:37:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1424. [2022-07-12 09:37:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1171 states have (on average 1.403928266438941) internal successors, (1644), 1186 states have internal predecessors, (1644), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2022-07-12 09:37:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1959 transitions. [2022-07-12 09:37:32,060 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1959 transitions. Word has length 66 [2022-07-12 09:37:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:32,060 INFO L495 AbstractCegarLoop]: Abstraction has 1424 states and 1959 transitions. [2022-07-12 09:37:32,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:37:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1959 transitions. [2022-07-12 09:37:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:32,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:32,062 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, 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 09:37:32,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:37:32,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash 414689489, now seen corresponding path program 1 times [2022-07-12 09:37:32,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:32,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526136369] [2022-07-12 09:37:32,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:32,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:37:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:32,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526136369] [2022-07-12 09:37:32,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526136369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:32,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:32,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:32,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704748801] [2022-07-12 09:37:32,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:32,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:32,194 INFO L87 Difference]: Start difference. First operand 1424 states and 1959 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:33,170 INFO L93 Difference]: Finished difference Result 2601 states and 3510 transitions. [2022-07-12 09:37:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:37:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-12 09:37:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:33,176 INFO L225 Difference]: With dead ends: 2601 [2022-07-12 09:37:33,176 INFO L226 Difference]: Without dead ends: 1595 [2022-07-12 09:37:33,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:37:33,180 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 1044 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:33,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 3128 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:37:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2022-07-12 09:37:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1464. [2022-07-12 09:37:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1203 states have (on average 1.3906899418121363) internal successors, (1673), 1218 states have internal predecessors, (1673), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2022-07-12 09:37:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1996 transitions. [2022-07-12 09:37:33,223 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1996 transitions. Word has length 91 [2022-07-12 09:37:33,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:33,225 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1996 transitions. [2022-07-12 09:37:33,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:33,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1996 transitions. [2022-07-12 09:37:33,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:33,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:33,229 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, 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 09:37:33,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:37:33,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:33,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash 858590163, now seen corresponding path program 1 times [2022-07-12 09:37:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:33,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518728727] [2022-07-12 09:37:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:37:33,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:33,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518728727] [2022-07-12 09:37:33,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518728727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:33,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:33,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191562970] [2022-07-12 09:37:33,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:33,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:33,303 INFO L87 Difference]: Start difference. First operand 1464 states and 1996 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 09:37:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:33,756 INFO L93 Difference]: Finished difference Result 3781 states and 5032 transitions. [2022-07-12 09:37:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:37:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-12 09:37:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:33,770 INFO L225 Difference]: With dead ends: 3781 [2022-07-12 09:37:33,771 INFO L226 Difference]: Without dead ends: 2736 [2022-07-12 09:37:33,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:37:33,777 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 2233 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:33,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 1595 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:37:33,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-07-12 09:37:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2506. [2022-07-12 09:37:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2016 states have (on average 1.337797619047619) internal successors, (2697), 2050 states have internal predecessors, (2697), 266 states have call successors, (266), 170 states have call predecessors, (266), 222 states have return successors, (371), 288 states have call predecessors, (371), 262 states have call successors, (371) [2022-07-12 09:37:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3334 transitions. [2022-07-12 09:37:33,864 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3334 transitions. Word has length 91 [2022-07-12 09:37:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:33,865 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 3334 transitions. [2022-07-12 09:37:33,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 09:37:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3334 transitions. [2022-07-12 09:37:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:33,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:33,866 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, 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 09:37:33,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:37:33,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash -199247915, now seen corresponding path program 1 times [2022-07-12 09:37:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:33,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126624007] [2022-07-12 09:37:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:37:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:33,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126624007] [2022-07-12 09:37:33,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126624007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:33,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:33,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:37:33,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617450197] [2022-07-12 09:37:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:33,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:37:33,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:37:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:37:33,925 INFO L87 Difference]: Start difference. First operand 2506 states and 3334 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:34,478 INFO L93 Difference]: Finished difference Result 3670 states and 4798 transitions. [2022-07-12 09:37:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:37:34,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-12 09:37:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:34,485 INFO L225 Difference]: With dead ends: 3670 [2022-07-12 09:37:34,485 INFO L226 Difference]: Without dead ends: 1583 [2022-07-12 09:37:34,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:34,489 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 820 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:34,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 2183 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:37:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-07-12 09:37:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1464. [2022-07-12 09:37:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1203 states have (on average 1.368246051537822) internal successors, (1646), 1218 states have internal predecessors, (1646), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2022-07-12 09:37:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1969 transitions. [2022-07-12 09:37:34,529 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1969 transitions. Word has length 91 [2022-07-12 09:37:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:34,529 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1969 transitions. [2022-07-12 09:37:34,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1969 transitions. [2022-07-12 09:37:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 09:37:34,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:34,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:34,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:37:34,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1459676537, now seen corresponding path program 1 times [2022-07-12 09:37:34,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:34,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666153915] [2022-07-12 09:37:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:34,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:37:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:34,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666153915] [2022-07-12 09:37:34,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666153915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:34,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:34,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690111260] [2022-07-12 09:37:34,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:34,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:34,603 INFO L87 Difference]: Start difference. First operand 1464 states and 1969 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:37:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:35,838 INFO L93 Difference]: Finished difference Result 3599 states and 4703 transitions. [2022-07-12 09:37:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 09:37:35,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-12 09:37:35,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:35,847 INFO L225 Difference]: With dead ends: 3599 [2022-07-12 09:37:35,848 INFO L226 Difference]: Without dead ends: 2395 [2022-07-12 09:37:35,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-12 09:37:35,851 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 2653 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2699 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:35,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2699 Valid, 2868 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:37:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-07-12 09:37:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2205. [2022-07-12 09:37:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1769 states have (on average 1.3126059920859243) internal successors, (2322), 1795 states have internal predecessors, (2322), 236 states have call successors, (236), 145 states have call predecessors, (236), 198 states have return successors, (320), 266 states have call predecessors, (320), 232 states have call successors, (320) [2022-07-12 09:37:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2878 transitions. [2022-07-12 09:37:35,919 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2878 transitions. Word has length 92 [2022-07-12 09:37:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:35,920 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 2878 transitions. [2022-07-12 09:37:35,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:37:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2878 transitions. [2022-07-12 09:37:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 09:37:35,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:35,922 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:37:35,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1760478952, now seen corresponding path program 1 times [2022-07-12 09:37:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61043310] [2022-07-12 09:37:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:37:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 09:37:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:37:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:37:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:37:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 09:37:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 09:37:36,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:36,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61043310] [2022-07-12 09:37:36,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61043310] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:37:36,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664223958] [2022-07-12 09:37:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:36,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:37:36,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:36,041 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 09:37:36,046 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 09:37:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:37:36,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:37:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 09:37:36,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:37:36,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664223958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:36,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:37:36,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-12 09:37:36,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823389462] [2022-07-12 09:37:36,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:36,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:37:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:37:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:36,333 INFO L87 Difference]: Start difference. First operand 2205 states and 2878 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:37:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:36,422 INFO L93 Difference]: Finished difference Result 5550 states and 7020 transitions. [2022-07-12 09:37:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:37:36,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-12 09:37:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:36,435 INFO L225 Difference]: With dead ends: 5550 [2022-07-12 09:37:36,435 INFO L226 Difference]: Without dead ends: 3840 [2022-07-12 09:37:36,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:36,441 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 61 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:36,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1577 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:37:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2022-07-12 09:37:36,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 3803. [2022-07-12 09:37:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3013 states have (on average 1.2731496846996349) internal successors, (3836), 3059 states have internal predecessors, (3836), 413 states have call successors, (413), 282 states have call predecessors, (413), 375 states have return successors, (549), 463 states have call predecessors, (549), 409 states have call successors, (549) [2022-07-12 09:37:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 4798 transitions. [2022-07-12 09:37:36,583 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 4798 transitions. Word has length 163 [2022-07-12 09:37:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:36,583 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 4798 transitions. [2022-07-12 09:37:36,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:37:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 4798 transitions. [2022-07-12 09:37:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-12 09:37:36,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:36,586 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:36,609 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 09:37:36,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:37:36,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1817064887, now seen corresponding path program 1 times [2022-07-12 09:37:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:36,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519970384] [2022-07-12 09:37:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:37:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 09:37:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:37:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:37:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 09:37:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 09:37:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 09:37:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 09:37:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-12 09:37:36,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:36,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519970384] [2022-07-12 09:37:36,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519970384] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:37:36,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251392453] [2022-07-12 09:37:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:36,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:37:36,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:36,908 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 09:37:36,910 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 09:37:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:37:37,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:37:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 09:37:37,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:37:37,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251392453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:37,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:37:37,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-12 09:37:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152483950] [2022-07-12 09:37:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:37,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:37:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:37:37,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:37,262 INFO L87 Difference]: Start difference. First operand 3803 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 09:37:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:37,439 INFO L93 Difference]: Finished difference Result 10571 states and 13068 transitions. [2022-07-12 09:37:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:37:37,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-07-12 09:37:37,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:37,483 INFO L225 Difference]: With dead ends: 10571 [2022-07-12 09:37:37,483 INFO L226 Difference]: Without dead ends: 7187 [2022-07-12 09:37:37,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:37,489 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 52 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1577 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:37:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2022-07-12 09:37:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 7177. [2022-07-12 09:37:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7177 states, 5640 states have (on average 1.2459219858156028) internal successors, (7027), 5727 states have internal predecessors, (7027), 791 states have call successors, (791), 556 states have call predecessors, (791), 744 states have return successors, (1067), 895 states have call predecessors, (1067), 787 states have call successors, (1067) [2022-07-12 09:37:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 8885 transitions. [2022-07-12 09:37:37,746 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 8885 transitions. Word has length 195 [2022-07-12 09:37:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:37,747 INFO L495 AbstractCegarLoop]: Abstraction has 7177 states and 8885 transitions. [2022-07-12 09:37:37,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 09:37:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 8885 transitions. [2022-07-12 09:37:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-12 09:37:37,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:37,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:37,773 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 09:37:37,971 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,SelfDestructingSolverStorable9 [2022-07-12 09:37:37,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:37,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1580509131, now seen corresponding path program 1 times [2022-07-12 09:37:37,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:37,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035237583] [2022-07-12 09:37:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:37,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:37:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 09:37:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:37:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:37:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 09:37:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 09:37:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 09:37:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 09:37:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-12 09:37:38,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:38,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035237583] [2022-07-12 09:37:38,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035237583] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:37:38,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048543397] [2022-07-12 09:37:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:38,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:37:38,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:38,078 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 09:37:38,080 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 09:37:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:37:38,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:37:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-12 09:37:38,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:37:38,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048543397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:38,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:37:38,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-12 09:37:38,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298373584] [2022-07-12 09:37:38,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:38,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:37:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:38,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:37:38,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:38,378 INFO L87 Difference]: Start difference. First operand 7177 states and 8885 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 09:37:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:38,594 INFO L93 Difference]: Finished difference Result 12611 states and 15779 transitions. [2022-07-12 09:37:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:37:38,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2022-07-12 09:37:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:38,601 INFO L225 Difference]: With dead ends: 12611 [2022-07-12 09:37:38,601 INFO L226 Difference]: Without dead ends: 410 [2022-07-12 09:37:38,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:38,643 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:38,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 777 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:37:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-07-12 09:37:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-07-12 09:37:38,655 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 09:37:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 649 transitions. [2022-07-12 09:37:38,657 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 649 transitions. Word has length 195 [2022-07-12 09:37:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:38,657 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 649 transitions. [2022-07-12 09:37:38,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 09:37:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 649 transitions. [2022-07-12 09:37:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:38,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:38,661 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 09:37:38,689 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 09:37:38,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:37:38,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:38,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1535088010, now seen corresponding path program 1 times [2022-07-12 09:37:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:38,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286404598] [2022-07-12 09:37:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:38,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:39,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:39,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286404598] [2022-07-12 09:37:39,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286404598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:39,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:39,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:37:39,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936386042] [2022-07-12 09:37:39,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:37:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:37:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:37:39,017 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 09:37:40,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:40,381 INFO L93 Difference]: Finished difference Result 961 states and 1543 transitions. [2022-07-12 09:37:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:37:40,381 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 09:37:40,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:40,383 INFO L225 Difference]: With dead ends: 961 [2022-07-12 09:37:40,383 INFO L226 Difference]: Without dead ends: 563 [2022-07-12 09:37:40,384 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 09:37:40,385 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1114 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:40,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1151 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:37:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-12 09:37:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-12 09:37:40,398 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 09:37:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 648 transitions. [2022-07-12 09:37:40,399 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 648 transitions. Word has length 190 [2022-07-12 09:37:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:40,400 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 648 transitions. [2022-07-12 09:37:40,400 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 09:37:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 648 transitions. [2022-07-12 09:37:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:40,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:40,401 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 09:37:40,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:37:40,402 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:40,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1160730228, now seen corresponding path program 1 times [2022-07-12 09:37:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:40,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578033497] [2022-07-12 09:37:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,500 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 09:37:40,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:40,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578033497] [2022-07-12 09:37:40,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578033497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:40,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:40,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:37:40,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366124592] [2022-07-12 09:37:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:40,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:37:40,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:40,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:37:40,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:37:40,504 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 09:37:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:41,625 INFO L93 Difference]: Finished difference Result 953 states and 1526 transitions. [2022-07-12 09:37:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:37:41,625 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 09:37:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:41,627 INFO L225 Difference]: With dead ends: 953 [2022-07-12 09:37:41,627 INFO L226 Difference]: Without dead ends: 563 [2022-07-12 09:37:41,628 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 09:37:41,629 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1105 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:41,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1149 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:37:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-12 09:37:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-12 09:37:41,644 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 09:37:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 647 transitions. [2022-07-12 09:37:41,645 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 647 transitions. Word has length 190 [2022-07-12 09:37:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:41,646 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 647 transitions. [2022-07-12 09:37:41,646 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 09:37:41,646 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 647 transitions. [2022-07-12 09:37:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:41,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:41,647 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 09:37:41,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:37:41,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1070669938, now seen corresponding path program 1 times [2022-07-12 09:37:41,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:41,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464229187] [2022-07-12 09:37:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,745 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 09:37:41,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:41,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464229187] [2022-07-12 09:37:41,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464229187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:41,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:41,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:37:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084661052] [2022-07-12 09:37:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:37:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:37:41,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:37:41,747 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 09:37:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:44,300 INFO L93 Difference]: Finished difference Result 1512 states and 2438 transitions. [2022-07-12 09:37:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:37:44,302 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 09:37:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:44,305 INFO L225 Difference]: With dead ends: 1512 [2022-07-12 09:37:44,305 INFO L226 Difference]: Without dead ends: 1124 [2022-07-12 09:37:44,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:44,306 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1683 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:44,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 1816 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:37:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-07-12 09:37:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 817. [2022-07-12 09:37:44,340 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 09:37:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1301 transitions. [2022-07-12 09:37:44,342 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1301 transitions. Word has length 190 [2022-07-12 09:37:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:44,342 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1301 transitions. [2022-07-12 09:37:44,342 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 09:37:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1301 transitions. [2022-07-12 09:37:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:44,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:44,344 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 09:37:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:37:44,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -776356498, now seen corresponding path program 1 times [2022-07-12 09:37:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:44,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789455977] [2022-07-12 09:37:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:44,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,447 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 09:37:44,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:44,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789455977] [2022-07-12 09:37:44,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789455977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:44,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:44,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:44,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937087971] [2022-07-12 09:37:44,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:44,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:44,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:44,449 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 09:37:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:47,549 INFO L93 Difference]: Finished difference Result 2500 states and 4041 transitions. [2022-07-12 09:37:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:47,556 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 09:37:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:47,561 INFO L225 Difference]: With dead ends: 2500 [2022-07-12 09:37:47,561 INFO L226 Difference]: Without dead ends: 1705 [2022-07-12 09:37:47,564 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 09:37:47,565 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1714 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:47,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 3189 Invalid, 3452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:37:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-12 09:37:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1195. [2022-07-12 09:37:47,619 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 09:37:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1896 transitions. [2022-07-12 09:37:47,622 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1896 transitions. Word has length 190 [2022-07-12 09:37:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:47,622 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1896 transitions. [2022-07-12 09:37:47,622 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 09:37:47,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1896 transitions. [2022-07-12 09:37:47,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:47,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:47,624 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 09:37:47,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:37:47,624 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:47,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:47,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1595360368, now seen corresponding path program 1 times [2022-07-12 09:37:47,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:47,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590285651] [2022-07-12 09:37:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:47,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:47,762 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 09:37:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:47,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590285651] [2022-07-12 09:37:47,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590285651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:47,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:47,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:47,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367268712] [2022-07-12 09:37:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:47,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:47,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:47,764 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 09:37:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:50,978 INFO L93 Difference]: Finished difference Result 3957 states and 6384 transitions. [2022-07-12 09:37:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:50,979 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 09:37:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:50,985 INFO L225 Difference]: With dead ends: 3957 [2022-07-12 09:37:50,985 INFO L226 Difference]: Without dead ends: 2784 [2022-07-12 09:37:50,987 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 09:37:50,988 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, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:50,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 3181 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:37:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-07-12 09:37:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1952. [2022-07-12 09:37:51,088 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 09:37:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3091 transitions. [2022-07-12 09:37:51,131 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3091 transitions. Word has length 190 [2022-07-12 09:37:51,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:51,132 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3091 transitions. [2022-07-12 09:37:51,132 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 09:37:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3091 transitions. [2022-07-12 09:37:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:51,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:51,136 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 09:37:51,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:37:51,136 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -129247954, now seen corresponding path program 1 times [2022-07-12 09:37:51,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:51,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380119665] [2022-07-12 09:37:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:51,294 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 09:37:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:51,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380119665] [2022-07-12 09:37:51,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380119665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:51,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:51,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:51,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230075471] [2022-07-12 09:37:51,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:51,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:51,296 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 09:37:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:52,919 INFO L93 Difference]: Finished difference Result 4702 states and 7570 transitions. [2022-07-12 09:37:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:52,920 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 09:37:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:52,927 INFO L225 Difference]: With dead ends: 4702 [2022-07-12 09:37:52,928 INFO L226 Difference]: Without dead ends: 2772 [2022-07-12 09:37:52,931 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 09:37:52,935 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1214 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:52,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1737 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:37:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2022-07-12 09:37:53,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1952. [2022-07-12 09:37:53,059 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 09:37:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3086 transitions. [2022-07-12 09:37:53,063 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3086 transitions. Word has length 190 [2022-07-12 09:37:53,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:53,063 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3086 transitions. [2022-07-12 09:37:53,063 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 09:37:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3086 transitions. [2022-07-12 09:37:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:53,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:53,064 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 09:37:53,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:37:53,065 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash 369308848, now seen corresponding path program 1 times [2022-07-12 09:37:53,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:53,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19121250] [2022-07-12 09:37:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:53,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,177 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 09:37:53,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:53,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19121250] [2022-07-12 09:37:53,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19121250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:53,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:53,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:53,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710017506] [2022-07-12 09:37:53,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:53,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:53,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:53,178 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 09:37:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:56,435 INFO L93 Difference]: Finished difference Result 6751 states and 10823 transitions. [2022-07-12 09:37:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:56,436 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 09:37:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:56,448 INFO L225 Difference]: With dead ends: 6751 [2022-07-12 09:37:56,448 INFO L226 Difference]: Without dead ends: 4821 [2022-07-12 09:37:56,451 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 09:37:56,452 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 1702 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:56,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 3169 Invalid, 3434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3347 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:37:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2022-07-12 09:37:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 3471. [2022-07-12 09:37:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3471 states, 3203 states have (on average 1.5735248204807992) internal successors, (5040), 3213 states have internal predecessors, (5040), 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 09:37:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 5483 transitions. [2022-07-12 09:37:56,659 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 5483 transitions. Word has length 190 [2022-07-12 09:37:56,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:56,659 INFO L495 AbstractCegarLoop]: Abstraction has 3471 states and 5483 transitions. [2022-07-12 09:37:56,659 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 09:37:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 5483 transitions. [2022-07-12 09:37:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:37:56,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:56,662 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 09:37:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:37:56,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash 939580654, now seen corresponding path program 1 times [2022-07-12 09:37:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:56,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49207470] [2022-07-12 09:37:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:37:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:37:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:37:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:37:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,772 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 09:37:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:56,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49207470] [2022-07-12 09:37:56,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49207470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:56,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:56,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:56,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369254724] [2022-07-12 09:37:56,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:56,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:56,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:56,775 INFO L87 Difference]: Start difference. First operand 3471 states and 5483 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 09:38:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:00,347 INFO L93 Difference]: Finished difference Result 12344 states and 19754 transitions. [2022-07-12 09:38:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:00,347 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 09:38:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:00,369 INFO L225 Difference]: With dead ends: 12344 [2022-07-12 09:38:00,370 INFO L226 Difference]: Without dead ends: 8895 [2022-07-12 09:38:00,378 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 09:38:00,379 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 1697 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:00,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 3161 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:38:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8895 states. [2022-07-12 09:38:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8895 to 6522. [2022-07-12 09:38:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6522 states, 6022 states have (on average 1.570906675523082) internal successors, (9460), 6040 states have internal predecessors, (9460), 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 09:38:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6522 states to 6522 states and 10317 transitions. [2022-07-12 09:38:00,877 INFO L78 Accepts]: Start accepts. Automaton has 6522 states and 10317 transitions. Word has length 190 [2022-07-12 09:38:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:00,878 INFO L495 AbstractCegarLoop]: Abstraction has 6522 states and 10317 transitions. [2022-07-12 09:38:00,878 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 09:38:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6522 states and 10317 transitions. [2022-07-12 09:38:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:38:00,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:00,882 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 09:38:00,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:38:00,882 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 153582764, now seen corresponding path program 1 times [2022-07-12 09:38:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:00,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978727029] [2022-07-12 09:38:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:38:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:00,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:38:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:00,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:38:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:38:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:00,996 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 09:38:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978727029] [2022-07-12 09:38:00,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978727029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:00,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:00,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686675526] [2022-07-12 09:38:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:00,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:00,998 INFO L87 Difference]: Start difference. First operand 6522 states and 10317 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 09:38:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:05,136 INFO L93 Difference]: Finished difference Result 23547 states and 37706 transitions. [2022-07-12 09:38:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:05,137 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 09:38:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:05,194 INFO L225 Difference]: With dead ends: 23547 [2022-07-12 09:38:05,195 INFO L226 Difference]: Without dead ends: 17047 [2022-07-12 09:38:05,211 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 09:38:05,212 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1813 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:05,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 2165 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:38:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17047 states. [2022-07-12 09:38:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17047 to 12637. [2022-07-12 09:38:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12637 states, 11673 states have (on average 1.5692624004112052) internal successors, (18318), 11707 states have internal predecessors, (18318), 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 09:38:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12637 states to 12637 states and 20057 transitions. [2022-07-12 09:38:06,160 INFO L78 Accepts]: Start accepts. Automaton has 12637 states and 20057 transitions. Word has length 190 [2022-07-12 09:38:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:06,161 INFO L495 AbstractCegarLoop]: Abstraction has 12637 states and 20057 transitions. [2022-07-12 09:38:06,161 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 09:38:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 12637 states and 20057 transitions. [2022-07-12 09:38:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:38:06,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:06,168 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 09:38:06,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:38:06,169 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash 820964654, now seen corresponding path program 1 times [2022-07-12 09:38:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:06,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552166472] [2022-07-12 09:38:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:38:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:38:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:38:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:38:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:06,329 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 09:38:06,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:06,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552166472] [2022-07-12 09:38:06,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552166472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:06,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:06,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:06,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582799326] [2022-07-12 09:38:06,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:06,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:06,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:06,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:06,332 INFO L87 Difference]: Start difference. First operand 12637 states and 20057 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 09:38:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:12,430 INFO L93 Difference]: Finished difference Result 45952 states and 73800 transitions. [2022-07-12 09:38:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:12,431 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 09:38:12,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:12,537 INFO L225 Difference]: With dead ends: 45952 [2022-07-12 09:38:12,537 INFO L226 Difference]: Without dead ends: 33337 [2022-07-12 09:38:12,577 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 09:38:12,577 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 1695 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:12,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 3151 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:38:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33337 states. [2022-07-12 09:38:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33337 to 24898. [2022-07-12 09:38:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24898 states, 23006 states have (on average 1.568286533947666) internal successors, (36080), 23072 states have internal predecessors, (36080), 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 09:38:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24898 states to 24898 states and 39745 transitions. [2022-07-12 09:38:14,659 INFO L78 Accepts]: Start accepts. Automaton has 24898 states and 39745 transitions. Word has length 190 [2022-07-12 09:38:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:14,659 INFO L495 AbstractCegarLoop]: Abstraction has 24898 states and 39745 transitions. [2022-07-12 09:38:14,659 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 09:38:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24898 states and 39745 transitions. [2022-07-12 09:38:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:38:14,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:14,670 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 09:38:14,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:38:14,670 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1374264212, now seen corresponding path program 1 times [2022-07-12 09:38:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:14,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062735859] [2022-07-12 09:38:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:14,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:38:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:38:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:38:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:38:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:14,780 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 09:38:14,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:14,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062735859] [2022-07-12 09:38:14,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062735859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:14,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:14,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032863121] [2022-07-12 09:38:14,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:14,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:14,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:14,782 INFO L87 Difference]: Start difference. First operand 24898 states and 39745 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 09:38:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:19,561 INFO L93 Difference]: Finished difference Result 58766 states and 95238 transitions. [2022-07-12 09:38:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:38:19,562 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 09:38:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:19,656 INFO L225 Difference]: With dead ends: 58766 [2022-07-12 09:38:19,656 INFO L226 Difference]: Without dead ends: 33890 [2022-07-12 09:38:19,705 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 09:38:19,706 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1217 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:19,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1717 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:38:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33890 states. [2022-07-12 09:38:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33890 to 24898. [2022-07-12 09:38:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24898 states, 23006 states have (on average 1.5654611840389463) internal successors, (36015), 23072 states have internal predecessors, (36015), 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 09:38:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24898 states to 24898 states and 39680 transitions. [2022-07-12 09:38:21,802 INFO L78 Accepts]: Start accepts. Automaton has 24898 states and 39680 transitions. Word has length 190 [2022-07-12 09:38:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:21,802 INFO L495 AbstractCegarLoop]: Abstraction has 24898 states and 39680 transitions. [2022-07-12 09:38:21,802 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 09:38:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24898 states and 39680 transitions. [2022-07-12 09:38:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:38:21,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:21,813 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 09:38:21,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:38:21,813 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:21,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1029436050, now seen corresponding path program 1 times [2022-07-12 09:38:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:21,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689749113] [2022-07-12 09:38:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:21,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:38:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:38:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:38:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:38:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:21,929 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 09:38:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:21,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689749113] [2022-07-12 09:38:21,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689749113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:21,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:21,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714831689] [2022-07-12 09:38:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:21,931 INFO L87 Difference]: Start difference. First operand 24898 states and 39680 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 09:38:31,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:31,693 INFO L93 Difference]: Finished difference Result 90697 states and 146134 transitions. [2022-07-12 09:38:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:31,700 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 09:38:31,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:31,900 INFO L225 Difference]: With dead ends: 90697 [2022-07-12 09:38:31,900 INFO L226 Difference]: Without dead ends: 65821 [2022-07-12 09:38:31,967 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 09:38:31,968 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1687 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:31,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 3140 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:38:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65821 states. [2022-07-12 09:38:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65821 to 49548. [2022-07-12 09:38:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49548 states, 45800 states have (on average 1.5640829694323144) internal successors, (71635), 45930 states have internal predecessors, (71635), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-12 09:38:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49548 states to 49548 states and 79638 transitions. [2022-07-12 09:38:36,534 INFO L78 Accepts]: Start accepts. Automaton has 49548 states and 79638 transitions. Word has length 190 [2022-07-12 09:38:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:36,534 INFO L495 AbstractCegarLoop]: Abstraction has 49548 states and 79638 transitions. [2022-07-12 09:38:36,534 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 09:38:36,535 INFO L276 IsEmpty]: Start isEmpty. Operand 49548 states and 79638 transitions. [2022-07-12 09:38:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:38:36,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:36,555 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 09:38:36,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:38:36,555 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash -48481236, now seen corresponding path program 1 times [2022-07-12 09:38:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:36,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90919019] [2022-07-12 09:38:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:36,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:38:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:38:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:38:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:36,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:38:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:36,669 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 09:38:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90919019] [2022-07-12 09:38:36,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90919019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:36,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:36,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10992665] [2022-07-12 09:38:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:36,671 INFO L87 Difference]: Start difference. First operand 49548 states and 79638 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 09:38:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:53,138 INFO L93 Difference]: Finished difference Result 180321 states and 293182 transitions. [2022-07-12 09:38:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:53,139 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 09:38:53,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:53,744 INFO L225 Difference]: With dead ends: 180321 [2022-07-12 09:38:53,745 INFO L226 Difference]: Without dead ends: 130795 [2022-07-12 09:38:53,867 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 09:38:53,867 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 1686 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:53,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 3135 Invalid, 3364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:38:53,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130795 states. [2022-07-12 09:39:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130795 to 98973. [2022-07-12 09:39:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98973 states, 91513 states have (on average 1.5632860905008032) internal successors, (143061), 91771 states have internal predecessors, (143061), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-12 09:39:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98973 states to 98973 states and 161198 transitions. [2022-07-12 09:39:04,032 INFO L78 Accepts]: Start accepts. Automaton has 98973 states and 161198 transitions. Word has length 190 [2022-07-12 09:39:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:39:04,032 INFO L495 AbstractCegarLoop]: Abstraction has 98973 states and 161198 transitions. [2022-07-12 09:39:04,032 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 09:39:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 98973 states and 161198 transitions. [2022-07-12 09:39:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 09:39:04,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:39:04,307 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 09:39:04,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:39:04,307 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:39:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:39:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1817952850, now seen corresponding path program 1 times [2022-07-12 09:39:04,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:39:04,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265453445] [2022-07-12 09:39:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:39:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:39:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:39:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:39:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 09:39:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 09:39:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 09:39:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:04,442 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 09:39:04,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:39:04,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265453445] [2022-07-12 09:39:04,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265453445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:39:04,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:39:04,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:39:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145022145] [2022-07-12 09:39:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:39:04,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:39:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:39:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:39:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:39:04,445 INFO L87 Difference]: Start difference. First operand 98973 states and 161198 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 09:39:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:39:37,522 INFO L93 Difference]: Finished difference Result 359568 states and 592916 transitions. [2022-07-12 09:39:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:39:37,523 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 09:39:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:39:38,646 INFO L225 Difference]: With dead ends: 359568 [2022-07-12 09:39:38,647 INFO L226 Difference]: Without dead ends: 260617 [2022-07-12 09:39:39,103 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 09:39:39,103 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 1688 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:39:39,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 3128 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3265 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:39:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260617 states.