./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_net_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/psyco/psyco_net_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 de2f4457e683c9057510f44fdcfcada297661f8afdeccfe707ab5df57f434b62 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:03:37,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:03:37,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:03:37,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:03:37,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:03:37,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:03:37,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:03:37,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:03:37,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:03:37,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:03:37,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:03:37,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:03:37,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:03:37,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:03:37,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:03:37,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:03:37,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:03:37,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:03:37,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:03:37,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:03:37,780 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:03:37,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:03:37,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:03:37,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:03:37,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:03:37,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:03:37,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:03:37,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:03:37,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:03:37,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:03:37,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:03:37,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:03:37,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:03:37,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:03:37,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:03:37,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:03:37,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:03:37,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:03:37,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:03:37,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:03:37,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:03:37,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:03:37,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:03:37,822 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:03:37,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:03:37,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:03:37,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:03:37,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:03:37,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:03:37,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:03:37,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:03:37,824 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:03:37,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:03:37,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:03:37,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:03:37,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:03:37,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:03:37,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:03:37,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:03:37,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:03:37,826 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:03:37,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:03:37,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:03:37,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:03:37,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:03:37,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:03:37,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:03:37,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:03:37,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:03:37,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:03:37,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:03:37,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:03:37,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:03:37,829 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:03:37,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:03:37,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:03:37,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de2f4457e683c9057510f44fdcfcada297661f8afdeccfe707ab5df57f434b62 [2022-07-19 13:03:38,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:03:38,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:03:38,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:03:38,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:03:38,048 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:03:38,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_net_1.c [2022-07-19 13:03:38,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1461a8383/eb70ee882eb3472690aac5db238c5f1c/FLAG5e1f1559f [2022-07-19 13:03:38,914 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:03:38,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_net_1.c [2022-07-19 13:03:38,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1461a8383/eb70ee882eb3472690aac5db238c5f1c/FLAG5e1f1559f [2022-07-19 13:03:39,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1461a8383/eb70ee882eb3472690aac5db238c5f1c [2022-07-19 13:03:39,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:03:39,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:03:39,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:03:39,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:03:39,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:03:39,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:03:39" (1/1) ... [2022-07-19 13:03:39,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd7cdf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:39, skipping insertion in model container [2022-07-19 13:03:39,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:03:39" (1/1) ... [2022-07-19 13:03:39,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:03:39,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:03:40,646 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/psyco/psyco_net_1.c[2349407,2349420] [2022-07-19 13:03:40,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:03:40,689 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:03:41,198 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/psyco/psyco_net_1.c[2349407,2349420] [2022-07-19 13:03:41,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:03:41,236 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:03:41,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41 WrapperNode [2022-07-19 13:03:41,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:03:41,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:03:41,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:03:41,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:03:41,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:41,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:41,974 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50075 [2022-07-19 13:03:41,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:03:41,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:03:41,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:03:41,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:03:41,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:41,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:42,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:42,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:42,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:42,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:42,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:42,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:03:42,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:03:42,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:03:42,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:03:42,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (1/1) ... [2022-07-19 13:03:42,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:03:42,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:03:42,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:03:42,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:03:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:03:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:03:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:03:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:03:43,132 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:03:43,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:03:52,649 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:03:52,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:03:52,686 INFO L299 CfgBuilder]: Removed 1130 assume(true) statements. [2022-07-19 13:03:52,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:03:52 BoogieIcfgContainer [2022-07-19 13:03:52,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:03:52,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:03:52,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:03:52,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:03:52,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:03:39" (1/3) ... [2022-07-19 13:03:52,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355d3852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:03:52, skipping insertion in model container [2022-07-19 13:03:52,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:03:41" (2/3) ... [2022-07-19 13:03:52,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355d3852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:03:52, skipping insertion in model container [2022-07-19 13:03:52,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:03:52" (3/3) ... [2022-07-19 13:03:52,700 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2022-07-19 13:03:52,709 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:03:52,709 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:03:52,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:03:52,850 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@62767d14, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@189f6365 [2022-07-19 13:03:52,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:03:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 9211 states, 9209 states have (on average 1.999457052883049) internal successors, (18413), 9210 states have internal predecessors, (18413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:52,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 13:03:52,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:03:52,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:03:52,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:03:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:03:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash 352619045, now seen corresponding path program 1 times [2022-07-19 13:03:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:03:52,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745310243] [2022-07-19 13:03:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:03:52,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:03:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:03:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:03:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:03:53,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745310243] [2022-07-19 13:03:53,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745310243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:03:53,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:03:53,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:03:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128724679] [2022-07-19 13:03:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:03:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:03:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:03:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:03:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:03:53,086 INFO L87 Difference]: Start difference. First operand has 9211 states, 9209 states have (on average 1.999457052883049) internal successors, (18413), 9210 states have internal predecessors, (18413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:03:53,237 INFO L93 Difference]: Finished difference Result 17698 states and 35380 transitions. [2022-07-19 13:03:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:03:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-19 13:03:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:03:53,271 INFO L225 Difference]: With dead ends: 17698 [2022-07-19 13:03:53,271 INFO L226 Difference]: Without dead ends: 8280 [2022-07-19 13:03:53,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:03:53,290 INFO L413 NwaCegarLoop]: 14147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14147 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:03:53,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:03:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2022-07-19 13:03:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8280. [2022-07-19 13:03:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8280 states, 8279 states have (on average 1.5698755888392317) internal successors, (12997), 8279 states have internal predecessors, (12997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:53,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8280 states to 8280 states and 12997 transitions. [2022-07-19 13:03:53,444 INFO L78 Accepts]: Start accepts. Automaton has 8280 states and 12997 transitions. Word has length 9 [2022-07-19 13:03:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:03:53,445 INFO L495 AbstractCegarLoop]: Abstraction has 8280 states and 12997 transitions. [2022-07-19 13:03:53,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8280 states and 12997 transitions. [2022-07-19 13:03:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:03:53,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:03:53,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:03:53,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:03:53,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:03:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:03:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1422650027, now seen corresponding path program 1 times [2022-07-19 13:03:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:03:53,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50733386] [2022-07-19 13:03:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:03:53,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:03:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:03:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:03:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:03:53,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50733386] [2022-07-19 13:03:53,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50733386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:03:53,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:03:53,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:03:53,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543386746] [2022-07-19 13:03:53,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:03:53,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:03:53,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:03:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:03:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:03:53,569 INFO L87 Difference]: Start difference. First operand 8280 states and 12997 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:03:54,878 INFO L93 Difference]: Finished difference Result 16561 states and 25996 transitions. [2022-07-19 13:03:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:03:54,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-19 13:03:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:03:54,900 INFO L225 Difference]: With dead ends: 16561 [2022-07-19 13:03:54,901 INFO L226 Difference]: Without dead ends: 8283 [2022-07-19 13:03:54,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:03:54,911 INFO L413 NwaCegarLoop]: 12996 mSDtfsCounter, 4 mSDsluCounter, 11520 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24516 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:03:54,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 24516 Invalid, 1474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 13:03:54,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2022-07-19 13:03:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 8283. [2022-07-19 13:03:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8283 states, 8282 states have (on average 1.569669162038155) internal successors, (13000), 8282 states have internal predecessors, (13000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 13000 transitions. [2022-07-19 13:03:55,037 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 13000 transitions. Word has length 10 [2022-07-19 13:03:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:03:55,038 INFO L495 AbstractCegarLoop]: Abstraction has 8283 states and 13000 transitions. [2022-07-19 13:03:55,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 13000 transitions. [2022-07-19 13:03:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 13:03:55,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:03:55,039 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:03:55,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:03:55,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:03:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:03:55,040 INFO L85 PathProgramCache]: Analyzing trace with hash 658080264, now seen corresponding path program 1 times [2022-07-19 13:03:55,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:03:55,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286578643] [2022-07-19 13:03:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:03:55,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:03:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:03:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:03:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:03:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286578643] [2022-07-19 13:03:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286578643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:03:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:03:55,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:03:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274438926] [2022-07-19 13:03:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:03:55,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:03:55,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:03:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:03:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:03:55,124 INFO L87 Difference]: Start difference. First operand 8283 states and 13000 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:03:56,288 INFO L93 Difference]: Finished difference Result 16569 states and 26005 transitions. [2022-07-19 13:03:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:03:56,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-19 13:03:56,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:03:56,311 INFO L225 Difference]: With dead ends: 16569 [2022-07-19 13:03:56,311 INFO L226 Difference]: Without dead ends: 8289 [2022-07-19 13:03:56,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:03:56,322 INFO L413 NwaCegarLoop]: 12995 mSDtfsCounter, 329 mSDsluCounter, 11197 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 24192 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:03:56,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 24192 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 13:03:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2022-07-19 13:03:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 8287. [2022-07-19 13:03:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8287 states, 8286 states have (on average 1.5693941588221096) internal successors, (13004), 8286 states have internal predecessors, (13004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 13004 transitions. [2022-07-19 13:03:56,438 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 13004 transitions. Word has length 15 [2022-07-19 13:03:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:03:56,438 INFO L495 AbstractCegarLoop]: Abstraction has 8287 states and 13004 transitions. [2022-07-19 13:03:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 13004 transitions. [2022-07-19 13:03:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 13:03:56,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:03:56,439 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:03:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 13:03:56,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:03:56,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:03:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash 505082677, now seen corresponding path program 1 times [2022-07-19 13:03:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:03:56,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47857738] [2022-07-19 13:03:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:03:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:03:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:03:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:03:56,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:03:56,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47857738] [2022-07-19 13:03:56,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47857738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:03:56,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:03:56,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:03:56,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595115813] [2022-07-19 13:03:56,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:03:56,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:03:56,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:03:56,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:03:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:03:56,532 INFO L87 Difference]: Start difference. First operand 8287 states and 13004 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:58,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:03:58,956 INFO L93 Difference]: Finished difference Result 16491 states and 25885 transitions. [2022-07-19 13:03:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:03:58,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-19 13:03:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:03:58,973 INFO L225 Difference]: With dead ends: 16491 [2022-07-19 13:03:58,974 INFO L226 Difference]: Without dead ends: 8165 [2022-07-19 13:03:58,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:03:58,988 INFO L413 NwaCegarLoop]: 9998 mSDtfsCounter, 11116 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 1749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11116 SdHoareTripleChecker+Valid, 9999 SdHoareTripleChecker+Invalid, 4167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1749 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 13:03:58,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11116 Valid, 9999 Invalid, 4167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1749 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 13:03:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2022-07-19 13:03:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8165. [2022-07-19 13:03:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8165 states, 8164 states have (on average 1.5165360117589417) internal successors, (12381), 8164 states have internal predecessors, (12381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12381 transitions. [2022-07-19 13:03:59,110 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 12381 transitions. Word has length 19 [2022-07-19 13:03:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:03:59,110 INFO L495 AbstractCegarLoop]: Abstraction has 8165 states and 12381 transitions. [2022-07-19 13:03:59,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:03:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 12381 transitions. [2022-07-19 13:03:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 13:03:59,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:03:59,111 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:03:59,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 13:03:59,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:03:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:03:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1597993323, now seen corresponding path program 1 times [2022-07-19 13:03:59,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:03:59,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257253146] [2022-07-19 13:03:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:03:59,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:03:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:03:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:03:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:03:59,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257253146] [2022-07-19 13:03:59,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257253146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:03:59,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:03:59,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:03:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033409718] [2022-07-19 13:03:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:03:59,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:03:59,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:03:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:03:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:03:59,191 INFO L87 Difference]: Start difference. First operand 8165 states and 12381 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:01,743 INFO L93 Difference]: Finished difference Result 24489 states and 37137 transitions. [2022-07-19 13:04:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:01,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-19 13:04:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:01,773 INFO L225 Difference]: With dead ends: 24489 [2022-07-19 13:04:01,773 INFO L226 Difference]: Without dead ends: 16277 [2022-07-19 13:04:01,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:01,782 INFO L413 NwaCegarLoop]: 10924 mSDtfsCounter, 11045 mSDsluCounter, 10881 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 1427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11045 SdHoareTripleChecker+Valid, 21805 SdHoareTripleChecker+Invalid, 4238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1427 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:01,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11045 Valid, 21805 Invalid, 4238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1427 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 13:04:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2022-07-19 13:04:01,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 14963. [2022-07-19 13:04:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14963 states, 14962 states have (on average 1.5566100788664616) internal successors, (23290), 14962 states have internal predecessors, (23290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14963 states to 14963 states and 23290 transitions. [2022-07-19 13:04:01,973 INFO L78 Accepts]: Start accepts. Automaton has 14963 states and 23290 transitions. Word has length 23 [2022-07-19 13:04:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:01,973 INFO L495 AbstractCegarLoop]: Abstraction has 14963 states and 23290 transitions. [2022-07-19 13:04:01,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 14963 states and 23290 transitions. [2022-07-19 13:04:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 13:04:01,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:01,976 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:01,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 13:04:01,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:01,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2046252058, now seen corresponding path program 1 times [2022-07-19 13:04:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:01,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170536048] [2022-07-19 13:04:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:02,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170536048] [2022-07-19 13:04:02,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170536048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:02,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:02,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:02,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932896445] [2022-07-19 13:04:02,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:02,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:02,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:02,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:02,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:02,053 INFO L87 Difference]: Start difference. First operand 14963 states and 23290 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:05,122 INFO L93 Difference]: Finished difference Result 37763 states and 58560 transitions. [2022-07-19 13:04:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:05,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-19 13:04:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:05,173 INFO L225 Difference]: With dead ends: 37763 [2022-07-19 13:04:05,174 INFO L226 Difference]: Without dead ends: 22521 [2022-07-19 13:04:05,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:05,196 INFO L413 NwaCegarLoop]: 10502 mSDtfsCounter, 10474 mSDsluCounter, 9629 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10474 SdHoareTripleChecker+Valid, 20131 SdHoareTripleChecker+Invalid, 5942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:05,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10474 Valid, 20131 Invalid, 5942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 13:04:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22521 states. [2022-07-19 13:04:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22521 to 21281. [2022-07-19 13:04:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21281 states, 21280 states have (on average 1.5518796992481203) internal successors, (33024), 21280 states have internal predecessors, (33024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21281 states to 21281 states and 33024 transitions. [2022-07-19 13:04:05,519 INFO L78 Accepts]: Start accepts. Automaton has 21281 states and 33024 transitions. Word has length 25 [2022-07-19 13:04:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:05,520 INFO L495 AbstractCegarLoop]: Abstraction has 21281 states and 33024 transitions. [2022-07-19 13:04:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21281 states and 33024 transitions. [2022-07-19 13:04:05,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 13:04:05,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:05,524 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:05,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 13:04:05,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1701022621, now seen corresponding path program 1 times [2022-07-19 13:04:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:05,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112353280] [2022-07-19 13:04:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:05,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:05,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112353280] [2022-07-19 13:04:05,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112353280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:05,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:05,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:05,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092721791] [2022-07-19 13:04:05,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:05,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:05,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:05,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:05,600 INFO L87 Difference]: Start difference. First operand 21281 states and 33024 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:10,104 INFO L93 Difference]: Finished difference Result 63807 states and 99006 transitions. [2022-07-19 13:04:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:10,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-19 13:04:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:10,183 INFO L225 Difference]: With dead ends: 63807 [2022-07-19 13:04:10,183 INFO L226 Difference]: Without dead ends: 42529 [2022-07-19 13:04:10,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:10,212 INFO L413 NwaCegarLoop]: 21590 mSDtfsCounter, 11013 mSDsluCounter, 9573 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11013 SdHoareTripleChecker+Valid, 31163 SdHoareTripleChecker+Invalid, 6745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 5597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:10,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11013 Valid, 31163 Invalid, 6745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 5597 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 13:04:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42529 states. [2022-07-19 13:04:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42529 to 40445. [2022-07-19 13:04:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40445 states, 40444 states have (on average 1.5746464246859855) internal successors, (63685), 40444 states have internal predecessors, (63685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40445 states to 40445 states and 63685 transitions. [2022-07-19 13:04:10,714 INFO L78 Accepts]: Start accepts. Automaton has 40445 states and 63685 transitions. Word has length 30 [2022-07-19 13:04:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:10,714 INFO L495 AbstractCegarLoop]: Abstraction has 40445 states and 63685 transitions. [2022-07-19 13:04:10,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 40445 states and 63685 transitions. [2022-07-19 13:04:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 13:04:10,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:10,717 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-19 13:04:10,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 13:04:10,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash 561792454, now seen corresponding path program 1 times [2022-07-19 13:04:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:10,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781208108] [2022-07-19 13:04:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:10,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 13:04:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781208108] [2022-07-19 13:04:10,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781208108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:10,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:10,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947409862] [2022-07-19 13:04:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:10,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:10,776 INFO L87 Difference]: Start difference. First operand 40445 states and 63685 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:11,964 INFO L93 Difference]: Finished difference Result 80919 states and 127422 transitions. [2022-07-19 13:04:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-07-19 13:04:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:12,041 INFO L225 Difference]: With dead ends: 80919 [2022-07-19 13:04:12,041 INFO L226 Difference]: Without dead ends: 40477 [2022-07-19 13:04:12,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:12,077 INFO L413 NwaCegarLoop]: 12342 mSDtfsCounter, 305 mSDsluCounter, 10699 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 23041 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:12,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 23041 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 13:04:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40477 states. [2022-07-19 13:04:12,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40477 to 40475. [2022-07-19 13:04:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40475 states, 40474 states have (on average 1.5742204872263676) internal successors, (63715), 40474 states have internal predecessors, (63715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40475 states to 40475 states and 63715 transitions. [2022-07-19 13:04:12,584 INFO L78 Accepts]: Start accepts. Automaton has 40475 states and 63715 transitions. Word has length 36 [2022-07-19 13:04:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:12,585 INFO L495 AbstractCegarLoop]: Abstraction has 40475 states and 63715 transitions. [2022-07-19 13:04:12,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 40475 states and 63715 transitions. [2022-07-19 13:04:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 13:04:12,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:12,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 13:04:12,589 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -421428809, now seen corresponding path program 1 times [2022-07-19 13:04:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863001912] [2022-07-19 13:04:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:12,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:12,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:12,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863001912] [2022-07-19 13:04:12,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863001912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:12,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:12,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582513830] [2022-07-19 13:04:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:12,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:12,646 INFO L87 Difference]: Start difference. First operand 40475 states and 63715 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:15,197 INFO L93 Difference]: Finished difference Result 109023 states and 171833 transitions. [2022-07-19 13:04:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-19 13:04:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:15,341 INFO L225 Difference]: With dead ends: 109023 [2022-07-19 13:04:15,341 INFO L226 Difference]: Without dead ends: 68501 [2022-07-19 13:04:15,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:15,388 INFO L413 NwaCegarLoop]: 10924 mSDtfsCounter, 11029 mSDsluCounter, 10881 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 1395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11029 SdHoareTripleChecker+Valid, 21805 SdHoareTripleChecker+Invalid, 4142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:15,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11029 Valid, 21805 Invalid, 4142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1395 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 13:04:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68501 states. [2022-07-19 13:04:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68501 to 66771. [2022-07-19 13:04:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66771 states, 66770 states have (on average 1.5851280515201438) internal successors, (105839), 66770 states have internal predecessors, (105839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66771 states to 66771 states and 105839 transitions. [2022-07-19 13:04:16,790 INFO L78 Accepts]: Start accepts. Automaton has 66771 states and 105839 transitions. Word has length 39 [2022-07-19 13:04:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:16,793 INFO L495 AbstractCegarLoop]: Abstraction has 66771 states and 105839 transitions. [2022-07-19 13:04:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 66771 states and 105839 transitions. [2022-07-19 13:04:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 13:04:16,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:16,795 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:16,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 13:04:16,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash -594466762, now seen corresponding path program 1 times [2022-07-19 13:04:16,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:16,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080736330] [2022-07-19 13:04:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 13:04:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:16,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080736330] [2022-07-19 13:04:16,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080736330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:16,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:16,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:16,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102007250] [2022-07-19 13:04:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:16,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:16,906 INFO L87 Difference]: Start difference. First operand 66771 states and 105839 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:18,086 INFO L93 Difference]: Finished difference Result 129327 states and 204980 transitions. [2022-07-19 13:04:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:18,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-19 13:04:18,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:18,526 INFO L225 Difference]: With dead ends: 129327 [2022-07-19 13:04:18,527 INFO L226 Difference]: Without dead ends: 62559 [2022-07-19 13:04:18,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:18,576 INFO L413 NwaCegarLoop]: 12047 mSDtfsCounter, 10323 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10323 SdHoareTripleChecker+Valid, 12598 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1190 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:18,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10323 Valid, 12598 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1190 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 13:04:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62559 states. [2022-07-19 13:04:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62559 to 62557. [2022-07-19 13:04:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62557 states, 62556 states have (on average 1.5842285312360125) internal successors, (99103), 62556 states have internal predecessors, (99103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62557 states to 62557 states and 99103 transitions. [2022-07-19 13:04:19,350 INFO L78 Accepts]: Start accepts. Automaton has 62557 states and 99103 transitions. Word has length 46 [2022-07-19 13:04:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:19,351 INFO L495 AbstractCegarLoop]: Abstraction has 62557 states and 99103 transitions. [2022-07-19 13:04:19,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 62557 states and 99103 transitions. [2022-07-19 13:04:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 13:04:19,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:19,352 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:19,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 13:04:19,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1299656225, now seen corresponding path program 1 times [2022-07-19 13:04:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:19,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250596758] [2022-07-19 13:04:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250596758] [2022-07-19 13:04:19,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250596758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:19,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:19,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 13:04:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791768688] [2022-07-19 13:04:19,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:04:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:04:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:04:19,416 INFO L87 Difference]: Start difference. First operand 62557 states and 99103 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:23,782 INFO L93 Difference]: Finished difference Result 119612 states and 189346 transitions. [2022-07-19 13:04:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:04:23,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-19 13:04:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:23,870 INFO L225 Difference]: With dead ends: 119612 [2022-07-19 13:04:23,871 INFO L226 Difference]: Without dead ends: 62791 [2022-07-19 13:04:23,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:04:23,909 INFO L413 NwaCegarLoop]: 9462 mSDtfsCounter, 30760 mSDsluCounter, 9230 mSDsCounter, 0 mSdLazyCounter, 4111 mSolverCounterSat, 3487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30760 SdHoareTripleChecker+Valid, 18692 SdHoareTripleChecker+Invalid, 7598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3487 IncrementalHoareTripleChecker+Valid, 4111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:23,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30760 Valid, 18692 Invalid, 7598 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3487 Valid, 4111 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 13:04:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62791 states. [2022-07-19 13:04:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62791 to 60395. [2022-07-19 13:04:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60395 states, 60394 states have (on average 1.5627380203331456) internal successors, (94380), 60394 states have internal predecessors, (94380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60395 states to 60395 states and 94380 transitions. [2022-07-19 13:04:24,610 INFO L78 Accepts]: Start accepts. Automaton has 60395 states and 94380 transitions. Word has length 52 [2022-07-19 13:04:24,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:24,611 INFO L495 AbstractCegarLoop]: Abstraction has 60395 states and 94380 transitions. [2022-07-19 13:04:24,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 60395 states and 94380 transitions. [2022-07-19 13:04:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 13:04:24,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:24,612 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:24,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 13:04:24,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1610447069, now seen corresponding path program 1 times [2022-07-19 13:04:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54757261] [2022-07-19 13:04:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 13:04:24,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:24,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54757261] [2022-07-19 13:04:24,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54757261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:24,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:24,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:24,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727976856] [2022-07-19 13:04:24,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:24,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:24,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:24,684 INFO L87 Difference]: Start difference. First operand 60395 states and 94380 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:26,161 INFO L93 Difference]: Finished difference Result 120432 states and 188193 transitions. [2022-07-19 13:04:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:26,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-19 13:04:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:26,423 INFO L225 Difference]: With dead ends: 120432 [2022-07-19 13:04:26,423 INFO L226 Difference]: Without dead ends: 60457 [2022-07-19 13:04:26,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:26,449 INFO L413 NwaCegarLoop]: 11637 mSDtfsCounter, 277 mSDsluCounter, 10274 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 21911 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:26,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 21911 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 13:04:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60457 states. [2022-07-19 13:04:27,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60457 to 60455. [2022-07-19 13:04:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60455 states, 60454 states have (on average 1.5621795083865417) internal successors, (94440), 60454 states have internal predecessors, (94440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60455 states to 60455 states and 94440 transitions. [2022-07-19 13:04:27,264 INFO L78 Accepts]: Start accepts. Automaton has 60455 states and 94440 transitions. Word has length 53 [2022-07-19 13:04:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:27,265 INFO L495 AbstractCegarLoop]: Abstraction has 60455 states and 94440 transitions. [2022-07-19 13:04:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 60455 states and 94440 transitions. [2022-07-19 13:04:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 13:04:27,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:27,266 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:27,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 13:04:27,266 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2089054241, now seen corresponding path program 1 times [2022-07-19 13:04:27,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:27,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127109240] [2022-07-19 13:04:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 13:04:27,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:27,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127109240] [2022-07-19 13:04:27,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127109240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:27,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:27,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:27,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419142595] [2022-07-19 13:04:27,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:27,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:27,320 INFO L87 Difference]: Start difference. First operand 60455 states and 94440 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:30,116 INFO L93 Difference]: Finished difference Result 110047 states and 171350 transitions. [2022-07-19 13:04:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:30,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-19 13:04:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:30,365 INFO L225 Difference]: With dead ends: 110047 [2022-07-19 13:04:30,365 INFO L226 Difference]: Without dead ends: 61421 [2022-07-19 13:04:30,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:30,385 INFO L413 NwaCegarLoop]: 10159 mSDtfsCounter, 9944 mSDsluCounter, 9402 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 1080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9944 SdHoareTripleChecker+Valid, 19561 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1080 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:30,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9944 Valid, 19561 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1080 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 13:04:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61421 states. [2022-07-19 13:04:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61421 to 60199. [2022-07-19 13:04:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60199 states, 60198 states have (on average 1.5518123525698528) internal successors, (93416), 60198 states have internal predecessors, (93416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60199 states to 60199 states and 93416 transitions. [2022-07-19 13:04:31,083 INFO L78 Accepts]: Start accepts. Automaton has 60199 states and 93416 transitions. Word has length 58 [2022-07-19 13:04:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 60199 states and 93416 transitions. [2022-07-19 13:04:31,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 60199 states and 93416 transitions. [2022-07-19 13:04:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 13:04:31,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:31,085 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 13:04:31,085 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1311774324, now seen corresponding path program 1 times [2022-07-19 13:04:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:31,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357668738] [2022-07-19 13:04:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:31,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:31,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:31,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357668738] [2022-07-19 13:04:31,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357668738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:31,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:31,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361068223] [2022-07-19 13:04:31,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:31,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:31,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:31,138 INFO L87 Difference]: Start difference. First operand 60199 states and 93416 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:34,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:34,520 INFO L93 Difference]: Finished difference Result 122230 states and 188541 transitions. [2022-07-19 13:04:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:34,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-19 13:04:34,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:34,596 INFO L225 Difference]: With dead ends: 122230 [2022-07-19 13:04:34,597 INFO L226 Difference]: Without dead ends: 62411 [2022-07-19 13:04:34,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:34,631 INFO L413 NwaCegarLoop]: 10085 mSDtfsCounter, 10224 mSDsluCounter, 9166 mSDsCounter, 0 mSdLazyCounter, 3870 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10224 SdHoareTripleChecker+Valid, 19251 SdHoareTripleChecker+Invalid, 4716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 3870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:34,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10224 Valid, 19251 Invalid, 4716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 3870 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 13:04:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62411 states. [2022-07-19 13:04:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62411 to 59893. [2022-07-19 13:04:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59893 states, 59892 states have (on average 1.5482702197288452) internal successors, (92729), 59892 states have internal predecessors, (92729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59893 states to 59893 states and 92729 transitions. [2022-07-19 13:04:35,433 INFO L78 Accepts]: Start accepts. Automaton has 59893 states and 92729 transitions. Word has length 64 [2022-07-19 13:04:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:35,433 INFO L495 AbstractCegarLoop]: Abstraction has 59893 states and 92729 transitions. [2022-07-19 13:04:35,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 59893 states and 92729 transitions. [2022-07-19 13:04:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 13:04:35,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:35,434 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:35,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 13:04:35,434 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1468274043, now seen corresponding path program 1 times [2022-07-19 13:04:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:35,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997425912] [2022-07-19 13:04:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:35,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997425912] [2022-07-19 13:04:35,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997425912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886271212] [2022-07-19 13:04:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:35,502 INFO L87 Difference]: Start difference. First operand 59893 states and 92729 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:38,603 INFO L93 Difference]: Finished difference Result 97934 states and 150396 transitions. [2022-07-19 13:04:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:38,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-07-19 13:04:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:38,837 INFO L225 Difference]: With dead ends: 97934 [2022-07-19 13:04:38,837 INFO L226 Difference]: Without dead ends: 72926 [2022-07-19 13:04:38,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:38,856 INFO L413 NwaCegarLoop]: 19380 mSDtfsCounter, 9838 mSDsluCounter, 8888 mSDsCounter, 0 mSdLazyCounter, 5058 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9838 SdHoareTripleChecker+Valid, 28268 SdHoareTripleChecker+Invalid, 5696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 5058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:38,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9838 Valid, 28268 Invalid, 5696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 5058 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 13:04:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72926 states. [2022-07-19 13:04:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72926 to 71076. [2022-07-19 13:04:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71076 states, 71075 states have (on average 1.5502497361941612) internal successors, (110184), 71075 states have internal predecessors, (110184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71076 states to 71076 states and 110184 transitions. [2022-07-19 13:04:39,670 INFO L78 Accepts]: Start accepts. Automaton has 71076 states and 110184 transitions. Word has length 74 [2022-07-19 13:04:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:39,670 INFO L495 AbstractCegarLoop]: Abstraction has 71076 states and 110184 transitions. [2022-07-19 13:04:39,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 71076 states and 110184 transitions. [2022-07-19 13:04:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 13:04:39,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:39,672 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:39,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 13:04:39,673 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1736777499, now seen corresponding path program 1 times [2022-07-19 13:04:39,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:39,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441748179] [2022-07-19 13:04:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:39,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 13:04:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441748179] [2022-07-19 13:04:39,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441748179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:39,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:39,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855802949] [2022-07-19 13:04:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:39,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:39,732 INFO L87 Difference]: Start difference. First operand 71076 states and 110184 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:41,090 INFO L93 Difference]: Finished difference Result 138717 states and 215049 transitions. [2022-07-19 13:04:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:41,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-19 13:04:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:41,188 INFO L225 Difference]: With dead ends: 138717 [2022-07-19 13:04:41,188 INFO L226 Difference]: Without dead ends: 68433 [2022-07-19 13:04:41,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:41,235 INFO L413 NwaCegarLoop]: 11220 mSDtfsCounter, 9552 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9552 SdHoareTripleChecker+Valid, 12029 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:41,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9552 Valid, 12029 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 13:04:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68433 states. [2022-07-19 13:04:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68433 to 68431. [2022-07-19 13:04:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68431 states, 68430 states have (on average 1.549335086950168) internal successors, (106021), 68430 states have internal predecessors, (106021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68431 states to 68431 states and 106021 transitions. [2022-07-19 13:04:42,023 INFO L78 Accepts]: Start accepts. Automaton has 68431 states and 106021 transitions. Word has length 81 [2022-07-19 13:04:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:42,023 INFO L495 AbstractCegarLoop]: Abstraction has 68431 states and 106021 transitions. [2022-07-19 13:04:42,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 68431 states and 106021 transitions. [2022-07-19 13:04:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 13:04:42,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:42,025 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:42,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 13:04:42,025 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:42,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1749163296, now seen corresponding path program 1 times [2022-07-19 13:04:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:42,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083580639] [2022-07-19 13:04:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 13:04:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:42,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083580639] [2022-07-19 13:04:42,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083580639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:42,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:42,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:42,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39325333] [2022-07-19 13:04:42,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:42,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:42,164 INFO L87 Difference]: Start difference. First operand 68431 states and 106021 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:43,731 INFO L93 Difference]: Finished difference Result 136168 states and 210970 transitions. [2022-07-19 13:04:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:43,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-19 13:04:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:43,820 INFO L225 Difference]: With dead ends: 136168 [2022-07-19 13:04:43,821 INFO L226 Difference]: Without dead ends: 68529 [2022-07-19 13:04:43,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:43,858 INFO L413 NwaCegarLoop]: 11291 mSDtfsCounter, 276 mSDsluCounter, 10012 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 21303 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:43,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 21303 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 13:04:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68529 states. [2022-07-19 13:04:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68529 to 68527. [2022-07-19 13:04:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68527 states, 68526 states have (on average 1.5485655079823717) internal successors, (106117), 68526 states have internal predecessors, (106117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68527 states to 68527 states and 106117 transitions. [2022-07-19 13:04:44,755 INFO L78 Accepts]: Start accepts. Automaton has 68527 states and 106117 transitions. Word has length 84 [2022-07-19 13:04:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:44,755 INFO L495 AbstractCegarLoop]: Abstraction has 68527 states and 106117 transitions. [2022-07-19 13:04:44,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 68527 states and 106117 transitions. [2022-07-19 13:04:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 13:04:44,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:44,757 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:44,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 13:04:44,757 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash 668432337, now seen corresponding path program 1 times [2022-07-19 13:04:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:44,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140696002] [2022-07-19 13:04:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:44,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140696002] [2022-07-19 13:04:44,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140696002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:44,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:44,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 13:04:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362355496] [2022-07-19 13:04:44,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:44,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:04:44,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:04:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:04:44,845 INFO L87 Difference]: Start difference. First operand 68527 states and 106117 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:48,724 INFO L93 Difference]: Finished difference Result 93509 states and 143768 transitions. [2022-07-19 13:04:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:04:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-07-19 13:04:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:48,794 INFO L225 Difference]: With dead ends: 93509 [2022-07-19 13:04:48,794 INFO L226 Difference]: Without dead ends: 47080 [2022-07-19 13:04:48,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:04:48,832 INFO L413 NwaCegarLoop]: 8732 mSDtfsCounter, 28512 mSDsluCounter, 8366 mSDsCounter, 0 mSdLazyCounter, 4710 mSolverCounterSat, 2627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28512 SdHoareTripleChecker+Valid, 17098 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2627 IncrementalHoareTripleChecker+Valid, 4710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:48,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28512 Valid, 17098 Invalid, 7337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2627 Valid, 4710 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 13:04:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47080 states. [2022-07-19 13:04:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47080 to 45905. [2022-07-19 13:04:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45905 states, 45904 states have (on average 1.531587661205995) internal successors, (70306), 45904 states have internal predecessors, (70306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45905 states to 45905 states and 70306 transitions. [2022-07-19 13:04:49,438 INFO L78 Accepts]: Start accepts. Automaton has 45905 states and 70306 transitions. Word has length 88 [2022-07-19 13:04:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:49,439 INFO L495 AbstractCegarLoop]: Abstraction has 45905 states and 70306 transitions. [2022-07-19 13:04:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 45905 states and 70306 transitions. [2022-07-19 13:04:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 13:04:49,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:49,440 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:49,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 13:04:49,441 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:49,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1526878815, now seen corresponding path program 1 times [2022-07-19 13:04:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:49,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493325844] [2022-07-19 13:04:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:49,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:49,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:49,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493325844] [2022-07-19 13:04:49,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493325844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:49,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:49,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 13:04:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381510674] [2022-07-19 13:04:49,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:49,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:04:49,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:04:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:04:49,511 INFO L87 Difference]: Start difference. First operand 45905 states and 70306 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:53,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:53,238 INFO L93 Difference]: Finished difference Result 59447 states and 89959 transitions. [2022-07-19 13:04:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:04:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-19 13:04:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:53,282 INFO L225 Difference]: With dead ends: 59447 [2022-07-19 13:04:53,283 INFO L226 Difference]: Without dead ends: 35780 [2022-07-19 13:04:53,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:04:53,298 INFO L413 NwaCegarLoop]: 16028 mSDtfsCounter, 19021 mSDsluCounter, 8367 mSDsCounter, 0 mSdLazyCounter, 6166 mSolverCounterSat, 1507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19021 SdHoareTripleChecker+Valid, 24395 SdHoareTripleChecker+Invalid, 7673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1507 IncrementalHoareTripleChecker+Valid, 6166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:53,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19021 Valid, 24395 Invalid, 7673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1507 Valid, 6166 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 13:04:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35780 states. [2022-07-19 13:04:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35780 to 34605. [2022-07-19 13:04:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34605 states, 34604 states have (on average 1.5253727892729165) internal successors, (52784), 34604 states have internal predecessors, (52784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34605 states to 34605 states and 52784 transitions. [2022-07-19 13:04:53,696 INFO L78 Accepts]: Start accepts. Automaton has 34605 states and 52784 transitions. Word has length 90 [2022-07-19 13:04:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:53,696 INFO L495 AbstractCegarLoop]: Abstraction has 34605 states and 52784 transitions. [2022-07-19 13:04:53,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 34605 states and 52784 transitions. [2022-07-19 13:04:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 13:04:53,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:53,698 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 13:04:53,698 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash -447066393, now seen corresponding path program 1 times [2022-07-19 13:04:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:53,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698891075] [2022-07-19 13:04:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:53,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:53,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698891075] [2022-07-19 13:04:53,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698891075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:53,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:53,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:53,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015340814] [2022-07-19 13:04:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:53,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:53,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:53,753 INFO L87 Difference]: Start difference. First operand 34605 states and 52784 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:54,647 INFO L93 Difference]: Finished difference Result 35774 states and 54507 transitions. [2022-07-19 13:04:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:54,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 13:04:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:54,693 INFO L225 Difference]: With dead ends: 35774 [2022-07-19 13:04:54,693 INFO L226 Difference]: Without dead ends: 35772 [2022-07-19 13:04:54,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:54,708 INFO L413 NwaCegarLoop]: 10928 mSDtfsCounter, 931 mSDsluCounter, 10160 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 21088 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:54,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 21088 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 13:04:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35772 states. [2022-07-19 13:04:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35772 to 35770. [2022-07-19 13:04:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35770 states, 35769 states have (on average 1.5234700438927562) internal successors, (54493), 35769 states have internal predecessors, (54493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35770 states to 35770 states and 54493 transitions. [2022-07-19 13:04:55,206 INFO L78 Accepts]: Start accepts. Automaton has 35770 states and 54493 transitions. Word has length 98 [2022-07-19 13:04:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:04:55,206 INFO L495 AbstractCegarLoop]: Abstraction has 35770 states and 54493 transitions. [2022-07-19 13:04:55,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 35770 states and 54493 transitions. [2022-07-19 13:04:55,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 13:04:55,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:04:55,209 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:04:55,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 13:04:55,209 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:04:55,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:04:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash 42027815, now seen corresponding path program 1 times [2022-07-19 13:04:55,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:04:55,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267037508] [2022-07-19 13:04:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:04:55,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:04:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:04:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:04:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:04:55,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267037508] [2022-07-19 13:04:55,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267037508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:04:55,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:04:55,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:04:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286875482] [2022-07-19 13:04:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:04:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:04:55,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:04:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:04:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:55,256 INFO L87 Difference]: Start difference. First operand 35770 states and 54493 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:04:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:04:56,383 INFO L93 Difference]: Finished difference Result 60064 states and 91308 transitions. [2022-07-19 13:04:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:04:56,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-07-19 13:04:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:04:56,433 INFO L225 Difference]: With dead ends: 60064 [2022-07-19 13:04:56,433 INFO L226 Difference]: Without dead ends: 35466 [2022-07-19 13:04:56,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:04:56,457 INFO L413 NwaCegarLoop]: 9906 mSDtfsCounter, 10140 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10140 SdHoareTripleChecker+Valid, 9907 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 13:04:56,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10140 Valid, 9907 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 13:04:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35466 states.