./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.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 2218bd3b5024885ce258db0decccc6cd77d5db224efd54b84e54987ad5abfa77 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:23:44,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:23:44,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:23:44,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:23:44,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:23:44,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:23:44,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:23:44,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:23:44,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:23:44,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:23:44,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:23:44,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:23:44,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:23:44,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:23:44,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:23:44,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:23:44,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:23:44,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:23:44,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:23:44,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:23:44,694 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:23:44,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:23:44,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:23:44,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:23:44,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:23:44,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:23:44,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:23:44,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:23:44,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:23:44,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:23:44,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:23:44,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:23:44,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:23:44,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:23:44,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:23:44,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:23:44,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:23:44,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:23:44,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:23:44,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:23:44,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:23:44,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:23:44,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:23:44,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:23:44,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:23:44,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:23:44,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:23:44,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:23:44,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:23:44,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:23:44,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:23:44,741 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:23:44,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:23:44,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:23:44,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:23:44,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:23:44,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:23:44,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:23:44,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:23:44,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:23:44,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:23:44,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:23:44,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:23:44,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:23:44,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:23:44,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:23:44,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:23:44,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:23:44,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:23:44,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:23:44,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:23:44,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:23:44,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:23:44,746 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:23:44,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:23:44,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:23:44,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2218bd3b5024885ce258db0decccc6cd77d5db224efd54b84e54987ad5abfa77 [2022-07-22 18:23:44,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:23:44,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:23:44,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:23:44,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:23:44,979 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:23:44,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:23:45,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ea2d8fd/c38a4f2885004f4f94ae71cb4a6b0820/FLAGc3fb42d82 [2022-07-22 18:23:45,478 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:23:45,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:23:45,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ea2d8fd/c38a4f2885004f4f94ae71cb4a6b0820/FLAGc3fb42d82 [2022-07-22 18:23:45,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ea2d8fd/c38a4f2885004f4f94ae71cb4a6b0820 [2022-07-22 18:23:45,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:23:45,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:23:45,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:23:45,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:23:45,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:23:45,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:23:45" (1/1) ... [2022-07-22 18:23:45,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cc9861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:45, skipping insertion in model container [2022-07-22 18:23:45,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:23:45" (1/1) ... [2022-07-22 18:23:45,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:23:45,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:23:46,084 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-07-22 18:23:46,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:23:46,140 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:23:46,172 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-07-22 18:23:46,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:23:46,224 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:23:46,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46 WrapperNode [2022-07-22 18:23:46,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:23:46,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:23:46,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:23:46,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:23:46,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,284 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 662 [2022-07-22 18:23:46,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:23:46,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:23:46,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:23:46,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:23:46,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:23:46,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:23:46,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:23:46,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:23:46,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (1/1) ... [2022-07-22 18:23:46,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:23:46,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:23:46,369 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) [2022-07-22 18:23:46,398 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 [2022-07-22 18:23:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:23:46,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:23:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:23:46,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:23:46,503 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:23:46,505 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:23:47,013 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:23:47,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:23:47,026 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:23:47,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:23:47 BoogieIcfgContainer [2022-07-22 18:23:47,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:23:47,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:23:47,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:23:47,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:23:47,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:23:45" (1/3) ... [2022-07-22 18:23:47,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3d8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:23:47, skipping insertion in model container [2022-07-22 18:23:47,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:23:46" (2/3) ... [2022-07-22 18:23:47,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3d8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:23:47, skipping insertion in model container [2022-07-22 18:23:47,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:23:47" (3/3) ... [2022-07-22 18:23:47,039 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:23:47,051 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:23:47,052 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:23:47,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:23:47,127 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@29cdc486, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72604e30 [2022-07-22 18:23:47,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:23:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 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) [2022-07-22 18:23:47,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 18:23:47,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:47,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:47,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -113151096, now seen corresponding path program 1 times [2022-07-22 18:23:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:47,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816605835] [2022-07-22 18:23:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:47,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:47,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:47,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816605835] [2022-07-22 18:23:47,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816605835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:47,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:47,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:23:47,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451009452] [2022-07-22 18:23:47,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:23:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:23:47,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:23:47,585 INFO L87 Difference]: Start difference. First operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 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 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2022-07-22 18:23:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:47,815 INFO L93 Difference]: Finished difference Result 639 states and 1034 transitions. [2022-07-22 18:23:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:23:47,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 [2022-07-22 18:23:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:47,837 INFO L225 Difference]: With dead ends: 639 [2022-07-22 18:23:47,837 INFO L226 Difference]: Without dead ends: 540 [2022-07-22 18:23:47,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:23:47,844 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1598 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:47,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 1127 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:23:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-22 18:23:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 274. [2022-07-22 18:23:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.5128205128205128) internal successors, (413), 273 states have internal predecessors, (413), 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) [2022-07-22 18:23:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 413 transitions. [2022-07-22 18:23:47,931 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 413 transitions. Word has length 64 [2022-07-22 18:23:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:47,932 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 413 transitions. [2022-07-22 18:23:47,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2022-07-22 18:23:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 413 transitions. [2022-07-22 18:23:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 18:23:47,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:47,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:47,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:23:47,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash 507394196, now seen corresponding path program 1 times [2022-07-22 18:23:47,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:47,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474908645] [2022-07-22 18:23:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:48,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:48,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474908645] [2022-07-22 18:23:48,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474908645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:48,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:48,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:23:48,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105626171] [2022-07-22 18:23:48,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:48,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:23:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:23:48,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:23:48,125 INFO L87 Difference]: Start difference. First operand 274 states and 413 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-07-22 18:23:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:48,361 INFO L93 Difference]: Finished difference Result 1012 states and 1565 transitions. [2022-07-22 18:23:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:23:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2022-07-22 18:23:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:48,365 INFO L225 Difference]: With dead ends: 1012 [2022-07-22 18:23:48,365 INFO L226 Difference]: Without dead ends: 800 [2022-07-22 18:23:48,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:23:48,374 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 783 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:48,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 897 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:23:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-07-22 18:23:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 794. [2022-07-22 18:23:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.5359394703656999) internal successors, (1218), 793 states have internal predecessors, (1218), 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) [2022-07-22 18:23:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1218 transitions. [2022-07-22 18:23:48,468 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1218 transitions. Word has length 65 [2022-07-22 18:23:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:48,470 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1218 transitions. [2022-07-22 18:23:48,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-07-22 18:23:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1218 transitions. [2022-07-22 18:23:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:23:48,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:48,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:48,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:23:48,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:48,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:48,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1175932082, now seen corresponding path program 1 times [2022-07-22 18:23:48,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:48,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093991624] [2022-07-22 18:23:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:48,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:48,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093991624] [2022-07-22 18:23:48,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093991624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:48,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:48,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:23:48,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938644677] [2022-07-22 18:23:48,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:48,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:23:48,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:23:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:23:48,606 INFO L87 Difference]: Start difference. First operand 794 states and 1218 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:48,953 INFO L93 Difference]: Finished difference Result 2126 states and 3304 transitions. [2022-07-22 18:23:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:23:48,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:23:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:48,962 INFO L225 Difference]: With dead ends: 2126 [2022-07-22 18:23:48,962 INFO L226 Difference]: Without dead ends: 1382 [2022-07-22 18:23:48,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:23:48,969 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 997 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:48,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 246 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:23:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-07-22 18:23:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1380. [2022-07-22 18:23:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 1.5453226976069616) internal successors, (2131), 1379 states have internal predecessors, (2131), 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) [2022-07-22 18:23:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2131 transitions. [2022-07-22 18:23:49,114 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2131 transitions. Word has length 66 [2022-07-22 18:23:49,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:49,115 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 2131 transitions. [2022-07-22 18:23:49,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2131 transitions. [2022-07-22 18:23:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:23:49,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:49,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:23:49,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash 195420080, now seen corresponding path program 1 times [2022-07-22 18:23:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:49,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102187314] [2022-07-22 18:23:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:49,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:49,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102187314] [2022-07-22 18:23:49,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102187314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:49,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:49,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:23:49,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856696549] [2022-07-22 18:23:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:49,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:23:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:23:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:23:49,233 INFO L87 Difference]: Start difference. First operand 1380 states and 2131 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:49,670 INFO L93 Difference]: Finished difference Result 3712 states and 5789 transitions. [2022-07-22 18:23:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:23:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:23:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:49,680 INFO L225 Difference]: With dead ends: 3712 [2022-07-22 18:23:49,680 INFO L226 Difference]: Without dead ends: 2432 [2022-07-22 18:23:49,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:23:49,683 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 923 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:49,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 252 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:23:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-07-22 18:23:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2430. [2022-07-22 18:23:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2429 states have (on average 1.550020584602717) internal successors, (3765), 2429 states have internal predecessors, (3765), 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) [2022-07-22 18:23:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3765 transitions. [2022-07-22 18:23:49,913 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3765 transitions. Word has length 66 [2022-07-22 18:23:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:49,914 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 3765 transitions. [2022-07-22 18:23:49,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3765 transitions. [2022-07-22 18:23:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:23:49,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:49,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:23:49,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:49,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2140991135, now seen corresponding path program 1 times [2022-07-22 18:23:49,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:49,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797755108] [2022-07-22 18:23:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:49,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:49,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:49,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797755108] [2022-07-22 18:23:50,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797755108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:50,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:50,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:23:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884196768] [2022-07-22 18:23:50,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:23:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:50,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:23:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:23:50,003 INFO L87 Difference]: Start difference. First operand 2430 states and 3765 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:50,568 INFO L93 Difference]: Finished difference Result 6933 states and 10800 transitions. [2022-07-22 18:23:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:23:50,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:23:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:50,585 INFO L225 Difference]: With dead ends: 6933 [2022-07-22 18:23:50,585 INFO L226 Difference]: Without dead ends: 4576 [2022-07-22 18:23:50,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:23:50,591 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 949 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:50,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 250 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:23:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-07-22 18:23:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4574. [2022-07-22 18:23:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 1.5484364749617319) internal successors, (7081), 4573 states have internal predecessors, (7081), 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) [2022-07-22 18:23:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 7081 transitions. [2022-07-22 18:23:51,027 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 7081 transitions. Word has length 66 [2022-07-22 18:23:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:51,028 INFO L495 AbstractCegarLoop]: Abstraction has 4574 states and 7081 transitions. [2022-07-22 18:23:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 7081 transitions. [2022-07-22 18:23:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:23:51,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:51,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:51,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:23:51,031 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash -472666691, now seen corresponding path program 1 times [2022-07-22 18:23:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:51,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953469290] [2022-07-22 18:23:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:51,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:51,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953469290] [2022-07-22 18:23:51,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953469290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:51,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:51,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:23:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610031116] [2022-07-22 18:23:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:23:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:23:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:23:51,086 INFO L87 Difference]: Start difference. First operand 4574 states and 7081 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:51,969 INFO L93 Difference]: Finished difference Result 13472 states and 20916 transitions. [2022-07-22 18:23:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:23:51,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:23:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:52,002 INFO L225 Difference]: With dead ends: 13472 [2022-07-22 18:23:52,002 INFO L226 Difference]: Without dead ends: 8932 [2022-07-22 18:23:52,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:23:52,010 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1005 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:52,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 244 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:23:52,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2022-07-22 18:23:52,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 8930. [2022-07-22 18:23:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8930 states, 8929 states have (on average 1.540822040542054) internal successors, (13758), 8929 states have internal predecessors, (13758), 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) [2022-07-22 18:23:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8930 states to 8930 states and 13758 transitions. [2022-07-22 18:23:52,854 INFO L78 Accepts]: Start accepts. Automaton has 8930 states and 13758 transitions. Word has length 66 [2022-07-22 18:23:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:52,855 INFO L495 AbstractCegarLoop]: Abstraction has 8930 states and 13758 transitions. [2022-07-22 18:23:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:23:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8930 states and 13758 transitions. [2022-07-22 18:23:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 18:23:52,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:52,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:52,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:23:52,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:52,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:52,858 INFO L85 PathProgramCache]: Analyzing trace with hash 545251456, now seen corresponding path program 1 times [2022-07-22 18:23:52,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:52,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262483950] [2022-07-22 18:23:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:52,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:52,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262483950] [2022-07-22 18:23:52,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262483950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:52,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:52,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:23:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508670841] [2022-07-22 18:23:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:52,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:23:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:23:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:23:52,928 INFO L87 Difference]: Start difference. First operand 8930 states and 13758 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-22 18:23:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:54,386 INFO L93 Difference]: Finished difference Result 17508 states and 26911 transitions. [2022-07-22 18:23:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:23:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-07-22 18:23:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:54,443 INFO L225 Difference]: With dead ends: 17508 [2022-07-22 18:23:54,444 INFO L226 Difference]: Without dead ends: 17506 [2022-07-22 18:23:54,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:23:54,449 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 246 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:54,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 987 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:23:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17506 states. [2022-07-22 18:23:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17506 to 9186. [2022-07-22 18:23:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9185 states have (on average 1.5257485029940119) internal successors, (14014), 9185 states have internal predecessors, (14014), 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) [2022-07-22 18:23:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 14014 transitions. [2022-07-22 18:23:55,276 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 14014 transitions. Word has length 67 [2022-07-22 18:23:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:23:55,277 INFO L495 AbstractCegarLoop]: Abstraction has 9186 states and 14014 transitions. [2022-07-22 18:23:55,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-22 18:23:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 14014 transitions. [2022-07-22 18:23:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:23:55,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:23:55,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:23:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:23:55,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:23:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:23:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2333062, now seen corresponding path program 1 times [2022-07-22 18:23:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:23:55,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462911624] [2022-07-22 18:23:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:23:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:23:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:23:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:23:55,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:23:55,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462911624] [2022-07-22 18:23:55,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462911624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:23:55,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:23:55,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:23:55,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341926005] [2022-07-22 18:23:55,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:23:55,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:23:55,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:23:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:23:55,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:23:55,464 INFO L87 Difference]: Start difference. First operand 9186 states and 14014 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:23:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:23:59,324 INFO L93 Difference]: Finished difference Result 41173 states and 62279 transitions. [2022-07-22 18:23:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:23:59,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:23:59,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:23:59,408 INFO L225 Difference]: With dead ends: 41173 [2022-07-22 18:23:59,409 INFO L226 Difference]: Without dead ends: 35359 [2022-07-22 18:23:59,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-22 18:23:59,426 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1717 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:23:59,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 1151 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 18:23:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35359 states. [2022-07-22 18:24:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35359 to 9319. [2022-07-22 18:24:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9319 states, 9318 states have (on average 1.5227516634470917) internal successors, (14189), 9318 states have internal predecessors, (14189), 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) [2022-07-22 18:24:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 14189 transitions. [2022-07-22 18:24:00,628 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 14189 transitions. Word has length 68 [2022-07-22 18:24:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:00,629 INFO L495 AbstractCegarLoop]: Abstraction has 9319 states and 14189 transitions. [2022-07-22 18:24:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:24:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 14189 transitions. [2022-07-22 18:24:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:24:00,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:00,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:00,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:24:00,632 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:00,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:00,633 INFO L85 PathProgramCache]: Analyzing trace with hash -371480250, now seen corresponding path program 1 times [2022-07-22 18:24:00,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:00,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893459040] [2022-07-22 18:24:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:00,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:00,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:00,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893459040] [2022-07-22 18:24:00,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893459040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:00,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:00,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:24:00,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746374886] [2022-07-22 18:24:00,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:00,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:24:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:00,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:24:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:24:00,801 INFO L87 Difference]: Start difference. First operand 9319 states and 14189 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:24:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:04,617 INFO L93 Difference]: Finished difference Result 31054 states and 47033 transitions. [2022-07-22 18:24:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:24:04,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:24:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:04,685 INFO L225 Difference]: With dead ends: 31054 [2022-07-22 18:24:04,685 INFO L226 Difference]: Without dead ends: 29747 [2022-07-22 18:24:04,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-07-22 18:24:04,702 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1787 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:04,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1764 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 18:24:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29747 states. [2022-07-22 18:24:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29747 to 9319. [2022-07-22 18:24:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9319 states, 9318 states have (on average 1.522537025112685) internal successors, (14187), 9318 states have internal predecessors, (14187), 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) [2022-07-22 18:24:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 14187 transitions. [2022-07-22 18:24:05,798 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 14187 transitions. Word has length 68 [2022-07-22 18:24:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:05,798 INFO L495 AbstractCegarLoop]: Abstraction has 9319 states and 14187 transitions. [2022-07-22 18:24:05,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:24:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 14187 transitions. [2022-07-22 18:24:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:24:05,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:05,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:24:05,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2100624742, now seen corresponding path program 1 times [2022-07-22 18:24:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:05,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457396231] [2022-07-22 18:24:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:05,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457396231] [2022-07-22 18:24:05,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457396231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:05,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:05,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:24:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646977886] [2022-07-22 18:24:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:05,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:24:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:24:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:24:05,922 INFO L87 Difference]: Start difference. First operand 9319 states and 14187 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:24:09,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:09,684 INFO L93 Difference]: Finished difference Result 33277 states and 50298 transitions. [2022-07-22 18:24:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:24:09,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:24:09,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:09,731 INFO L225 Difference]: With dead ends: 33277 [2022-07-22 18:24:09,731 INFO L226 Difference]: Without dead ends: 29700 [2022-07-22 18:24:09,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-22 18:24:09,747 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1813 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:09,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 1263 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 18:24:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29700 states. [2022-07-22 18:24:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29700 to 9542. [2022-07-22 18:24:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9541 states have (on average 1.5182894874751074) internal successors, (14486), 9541 states have internal predecessors, (14486), 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) [2022-07-22 18:24:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 14486 transitions. [2022-07-22 18:24:11,058 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 14486 transitions. Word has length 68 [2022-07-22 18:24:11,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:11,059 INFO L495 AbstractCegarLoop]: Abstraction has 9542 states and 14486 transitions. [2022-07-22 18:24:11,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:24:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 14486 transitions. [2022-07-22 18:24:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:24:11,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:11,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:11,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:24:11,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1059619418, now seen corresponding path program 1 times [2022-07-22 18:24:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:11,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202203066] [2022-07-22 18:24:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:11,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:11,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202203066] [2022-07-22 18:24:11,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202203066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:11,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:11,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:24:11,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485255963] [2022-07-22 18:24:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:11,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:24:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:11,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:24:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:24:11,205 INFO L87 Difference]: Start difference. First operand 9542 states and 14486 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:24:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:16,448 INFO L93 Difference]: Finished difference Result 42240 states and 63609 transitions. [2022-07-22 18:24:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:24:16,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:24:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:16,494 INFO L225 Difference]: With dead ends: 42240 [2022-07-22 18:24:16,494 INFO L226 Difference]: Without dead ends: 33381 [2022-07-22 18:24:16,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-22 18:24:16,514 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1977 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:16,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 1914 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 18:24:16,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33381 states. [2022-07-22 18:24:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33381 to 9676. [2022-07-22 18:24:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9676 states, 9675 states have (on average 1.5121447028423773) internal successors, (14630), 9675 states have internal predecessors, (14630), 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) [2022-07-22 18:24:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9676 states to 9676 states and 14630 transitions. [2022-07-22 18:24:17,959 INFO L78 Accepts]: Start accepts. Automaton has 9676 states and 14630 transitions. Word has length 68 [2022-07-22 18:24:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 9676 states and 14630 transitions. [2022-07-22 18:24:17,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:24:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9676 states and 14630 transitions. [2022-07-22 18:24:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:24:17,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:17,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:17,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:24:17,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1047773961, now seen corresponding path program 1 times [2022-07-22 18:24:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:17,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966938952] [2022-07-22 18:24:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:17,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:18,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:18,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966938952] [2022-07-22 18:24:18,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966938952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:18,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:18,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:24:18,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5265244] [2022-07-22 18:24:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:18,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:24:18,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:24:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:24:18,062 INFO L87 Difference]: Start difference. First operand 9676 states and 14630 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-22 18:24:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:20,273 INFO L93 Difference]: Finished difference Result 25520 states and 38764 transitions. [2022-07-22 18:24:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:24:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2022-07-22 18:24:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:20,301 INFO L225 Difference]: With dead ends: 25520 [2022-07-22 18:24:20,302 INFO L226 Difference]: Without dead ends: 16942 [2022-07-22 18:24:20,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:24:20,317 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 170 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:20,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 605 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:24:20,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16942 states. [2022-07-22 18:24:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16942 to 16820. [2022-07-22 18:24:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16820 states, 16819 states have (on average 1.5012783161900232) internal successors, (25250), 16819 states have internal predecessors, (25250), 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) [2022-07-22 18:24:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16820 states to 16820 states and 25250 transitions. [2022-07-22 18:24:22,563 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 25250 transitions. Word has length 69 [2022-07-22 18:24:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:22,563 INFO L495 AbstractCegarLoop]: Abstraction has 16820 states and 25250 transitions. [2022-07-22 18:24:22,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-22 18:24:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 25250 transitions. [2022-07-22 18:24:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:24:22,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:22,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:22,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:24:22,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1802228217, now seen corresponding path program 1 times [2022-07-22 18:24:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420596725] [2022-07-22 18:24:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420596725] [2022-07-22 18:24:22,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420596725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:22,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:22,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:24:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377288732] [2022-07-22 18:24:22,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:22,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:24:22,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:24:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:24:22,600 INFO L87 Difference]: Start difference. First operand 16820 states and 25250 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:24:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:25,352 INFO L93 Difference]: Finished difference Result 29184 states and 43867 transitions. [2022-07-22 18:24:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:24:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:24:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:25,377 INFO L225 Difference]: With dead ends: 29184 [2022-07-22 18:24:25,377 INFO L226 Difference]: Without dead ends: 20218 [2022-07-22 18:24:25,389 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 [2022-07-22 18:24:25,390 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 156 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:25,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:24:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20218 states. [2022-07-22 18:24:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20218 to 19984. [2022-07-22 18:24:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19984 states, 19983 states have (on average 1.4800580493419406) internal successors, (29576), 19983 states have internal predecessors, (29576), 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) [2022-07-22 18:24:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19984 states to 19984 states and 29576 transitions. [2022-07-22 18:24:28,264 INFO L78 Accepts]: Start accepts. Automaton has 19984 states and 29576 transitions. Word has length 69 [2022-07-22 18:24:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:28,264 INFO L495 AbstractCegarLoop]: Abstraction has 19984 states and 29576 transitions. [2022-07-22 18:24:28,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:24:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 19984 states and 29576 transitions. [2022-07-22 18:24:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:24:28,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:28,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:28,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:24:28,268 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1041130329, now seen corresponding path program 1 times [2022-07-22 18:24:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:28,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542610354] [2022-07-22 18:24:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:28,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:28,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542610354] [2022-07-22 18:24:28,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542610354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:28,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:28,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:24:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126208936] [2022-07-22 18:24:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:28,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:24:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:24:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:24:28,301 INFO L87 Difference]: Start difference. First operand 19984 states and 29576 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:24:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:33,246 INFO L93 Difference]: Finished difference Result 50136 states and 74406 transitions. [2022-07-22 18:24:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:24:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:24:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:33,295 INFO L225 Difference]: With dead ends: 50136 [2022-07-22 18:24:33,295 INFO L226 Difference]: Without dead ends: 33658 [2022-07-22 18:24:33,315 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 [2022-07-22 18:24:33,316 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 175 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:33,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 466 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:24:33,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33658 states. [2022-07-22 18:24:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33658 to 33592. [2022-07-22 18:24:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33592 states, 33591 states have (on average 1.4715251108927987) internal successors, (49430), 33591 states have internal predecessors, (49430), 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) [2022-07-22 18:24:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33592 states to 33592 states and 49430 transitions. [2022-07-22 18:24:38,254 INFO L78 Accepts]: Start accepts. Automaton has 33592 states and 49430 transitions. Word has length 69 [2022-07-22 18:24:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:38,254 INFO L495 AbstractCegarLoop]: Abstraction has 33592 states and 49430 transitions. [2022-07-22 18:24:38,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:24:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 33592 states and 49430 transitions. [2022-07-22 18:24:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:24:38,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:38,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:38,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:24:38,259 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:38,259 INFO L85 PathProgramCache]: Analyzing trace with hash -933815240, now seen corresponding path program 1 times [2022-07-22 18:24:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:38,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684631126] [2022-07-22 18:24:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:38,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:38,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:38,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684631126] [2022-07-22 18:24:38,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684631126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:38,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:38,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:24:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121716619] [2022-07-22 18:24:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:38,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:24:38,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:24:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:24:38,290 INFO L87 Difference]: Start difference. First operand 33592 states and 49430 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:24:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:43,942 INFO L93 Difference]: Finished difference Result 46445 states and 68037 transitions. [2022-07-22 18:24:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:24:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:24:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:43,986 INFO L225 Difference]: With dead ends: 46445 [2022-07-22 18:24:43,986 INFO L226 Difference]: Without dead ends: 34325 [2022-07-22 18:24:43,998 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 [2022-07-22 18:24:43,999 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:43,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 466 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:24:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34325 states. [2022-07-22 18:24:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34325 to 30847. [2022-07-22 18:24:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30847 states, 30846 states have (on average 1.4431692926149258) internal successors, (44516), 30846 states have internal predecessors, (44516), 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) [2022-07-22 18:24:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30847 states to 30847 states and 44516 transitions. [2022-07-22 18:24:49,171 INFO L78 Accepts]: Start accepts. Automaton has 30847 states and 44516 transitions. Word has length 69 [2022-07-22 18:24:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:24:49,171 INFO L495 AbstractCegarLoop]: Abstraction has 30847 states and 44516 transitions. [2022-07-22 18:24:49,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:24:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 30847 states and 44516 transitions. [2022-07-22 18:24:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:24:49,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:24:49,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:24:49,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:24:49,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:24:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:24:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash 804290264, now seen corresponding path program 1 times [2022-07-22 18:24:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:24:49,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369802718] [2022-07-22 18:24:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:24:49,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:24:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:24:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:24:49,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:24:49,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369802718] [2022-07-22 18:24:49,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369802718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:24:49,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:24:49,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:24:49,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445838833] [2022-07-22 18:24:49,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:24:49,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:24:49,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:24:49,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:24:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:24:49,211 INFO L87 Difference]: Start difference. First operand 30847 states and 44516 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:24:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:24:55,209 INFO L93 Difference]: Finished difference Result 60636 states and 87270 transitions. [2022-07-22 18:24:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:24:55,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:24:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:24:55,262 INFO L225 Difference]: With dead ends: 60636 [2022-07-22 18:24:55,263 INFO L226 Difference]: Without dead ends: 33744 [2022-07-22 18:24:55,284 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 [2022-07-22 18:24:55,284 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 162 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:24:55,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 556 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:24:55,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33744 states. [2022-07-22 18:25:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33744 to 33426. [2022-07-22 18:25:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33426 states, 33425 states have (on average 1.4062228870605833) internal successors, (47003), 33425 states have internal predecessors, (47003), 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) [2022-07-22 18:25:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33426 states to 33426 states and 47003 transitions. [2022-07-22 18:25:01,307 INFO L78 Accepts]: Start accepts. Automaton has 33426 states and 47003 transitions. Word has length 69 [2022-07-22 18:25:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:25:01,307 INFO L495 AbstractCegarLoop]: Abstraction has 33426 states and 47003 transitions. [2022-07-22 18:25:01,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:25:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 33426 states and 47003 transitions. [2022-07-22 18:25:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:25:01,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:25:01,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:25:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:25:01,311 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:25:01,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:25:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash -77781245, now seen corresponding path program 1 times [2022-07-22 18:25:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:25:01,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375330388] [2022-07-22 18:25:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:25:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:25:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:25:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:25:01,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:25:01,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375330388] [2022-07-22 18:25:01,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375330388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:25:01,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:25:01,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:25:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647524540] [2022-07-22 18:25:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:25:01,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:25:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:25:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:25:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:25:01,367 INFO L87 Difference]: Start difference. First operand 33426 states and 47003 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:25:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:25:11,506 INFO L93 Difference]: Finished difference Result 69852 states and 99129 transitions. [2022-07-22 18:25:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:25:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-07-22 18:25:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:25:11,590 INFO L225 Difference]: With dead ends: 69852 [2022-07-22 18:25:11,590 INFO L226 Difference]: Without dead ends: 56383 [2022-07-22 18:25:11,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:25:11,613 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1091 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:25:11,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 1139 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:25:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56383 states. [2022-07-22 18:25:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56383 to 45616. [2022-07-22 18:25:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45616 states, 45615 states have (on average 1.4066863970185246) internal successors, (64166), 45615 states have internal predecessors, (64166), 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) [2022-07-22 18:25:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45616 states to 45616 states and 64166 transitions. [2022-07-22 18:25:20,617 INFO L78 Accepts]: Start accepts. Automaton has 45616 states and 64166 transitions. Word has length 70 [2022-07-22 18:25:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:25:20,618 INFO L495 AbstractCegarLoop]: Abstraction has 45616 states and 64166 transitions. [2022-07-22 18:25:20,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:25:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 45616 states and 64166 transitions. [2022-07-22 18:25:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:25:20,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:25:20,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:25:20,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:25:20,622 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:25:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:25:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1497723701, now seen corresponding path program 1 times [2022-07-22 18:25:20,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:25:20,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855065750] [2022-07-22 18:25:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:25:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:25:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:25:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:25:20,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:25:20,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855065750] [2022-07-22 18:25:20,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855065750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:25:20,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:25:20,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:25:20,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845732102] [2022-07-22 18:25:20,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:25:20,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:25:20,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:25:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:25:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:25:20,676 INFO L87 Difference]: Start difference. First operand 45616 states and 64166 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:25:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:25:33,167 INFO L93 Difference]: Finished difference Result 69167 states and 97864 transitions. [2022-07-22 18:25:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:25:33,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-07-22 18:25:33,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:25:33,262 INFO L225 Difference]: With dead ends: 69167 [2022-07-22 18:25:33,262 INFO L226 Difference]: Without dead ends: 65178 [2022-07-22 18:25:33,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:25:33,281 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1114 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:25:33,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1206 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:25:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65178 states.