./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.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 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:59:06,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:59:06,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:59:06,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:59:06,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:59:06,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:59:06,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:59:06,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:59:06,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:59:06,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:59:06,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:59:06,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:59:06,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:59:06,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:59:06,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:59:06,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:59:06,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:59:06,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:59:06,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:59:06,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:59:06,315 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:59:06,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:59:06,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:59:06,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:59:06,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:59:06,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:59:06,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:59:06,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:59:06,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:59:06,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:59:06,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:59:06,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:59:06,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:59:06,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:59:06,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:59:06,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:59:06,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:59:06,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:59:06,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:59:06,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:59:06,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:59:06,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:59:06,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:59:06,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:59:06,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:59:06,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:59:06,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:59:06,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:59:06,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:59:06,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:59:06,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:59:06,360 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:59:06,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:59:06,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:59:06,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:59:06,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:59:06,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:59:06,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:59:06,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:59:06,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:59:06,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:59:06,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:59:06,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:59:06,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:59:06,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:59:06,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:59:06,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:59:06,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:59:06,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:59:06,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:59:06,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:59:06,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:59:06,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:59:06,364 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:59:06,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:59:06,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:59:06,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a630ae12d5f6fa3f8faf425527884a616bada52a1fbcc4f1f28adcf4c6e228 [2022-07-12 06:59:06,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:59:06,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:59:06,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:59:06,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:59:06,565 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:59:06,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 06:59:06,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ade1eb2f/c3d000a6e7574360aeeb18d4a5d3fca6/FLAG7e7d38754 [2022-07-12 06:59:07,010 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:59:07,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 06:59:07,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ade1eb2f/c3d000a6e7574360aeeb18d4a5d3fca6/FLAG7e7d38754 [2022-07-12 06:59:07,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ade1eb2f/c3d000a6e7574360aeeb18d4a5d3fca6 [2022-07-12 06:59:07,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:59:07,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:59:07,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:59:07,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:59:07,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:59:07,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2657a36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07, skipping insertion in model container [2022-07-12 06:59:07,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:59:07,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:59:07,247 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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-07-12 06:59:07,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:59:07,298 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:59:07,335 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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-07-12 06:59:07,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:59:07,377 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:59:07,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07 WrapperNode [2022-07-12 06:59:07,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:59:07,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:59:07,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:59:07,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:59:07,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,421 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 595 [2022-07-12 06:59:07,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:59:07,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:59:07,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:59:07,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:59:07,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:59:07,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:59:07,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:59:07,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:59:07,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (1/1) ... [2022-07-12 06:59:07,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:59:07,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:59:07,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:59:07,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:59:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:59:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:59:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:59:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:59:07,584 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:59:07,585 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:59:08,003 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:59:08,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:59:08,010 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 06:59:08,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:59:08 BoogieIcfgContainer [2022-07-12 06:59:08,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:59:08,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:59:08,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:59:08,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:59:08,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:59:07" (1/3) ... [2022-07-12 06:59:08,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5425e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:59:08, skipping insertion in model container [2022-07-12 06:59:08,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:59:07" (2/3) ... [2022-07-12 06:59:08,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5425e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:59:08, skipping insertion in model container [2022-07-12 06:59:08,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:59:08" (3/3) ... [2022-07-12 06:59:08,018 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 06:59:08,028 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:59:08,031 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:59:08,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:59:08,082 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@5fdd95a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67716b83 [2022-07-12 06:59:08,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:59:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 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) [2022-07-12 06:59:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-12 06:59:08,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:08,093 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] [2022-07-12 06:59:08,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:08,097 INFO L85 PathProgramCache]: Analyzing trace with hash 293786216, now seen corresponding path program 1 times [2022-07-12 06:59:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:08,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16874897] [2022-07-12 06:59:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:08,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16874897] [2022-07-12 06:59:08,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16874897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:08,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:08,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:59:08,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818392967] [2022-07-12 06:59:08,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:08,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:08,419 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 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 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2022-07-12 06:59:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:08,555 INFO L93 Difference]: Finished difference Result 516 states and 834 transitions. [2022-07-12 06:59:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2022-07-12 06:59:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:08,574 INFO L225 Difference]: With dead ends: 516 [2022-07-12 06:59:08,575 INFO L226 Difference]: Without dead ends: 437 [2022-07-12 06:59:08,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:08,589 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 908 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:08,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1286 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:59:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-12 06:59:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 255. [2022-07-12 06:59:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.515748031496063) internal successors, (385), 254 states have internal predecessors, (385), 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) [2022-07-12 06:59:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2022-07-12 06:59:08,636 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 49 [2022-07-12 06:59:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:08,637 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2022-07-12 06:59:08,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2022-07-12 06:59:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2022-07-12 06:59:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 06:59:08,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:08,639 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] [2022-07-12 06:59:08,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:59:08,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:08,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1697275801, now seen corresponding path program 1 times [2022-07-12 06:59:08,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:08,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996709093] [2022-07-12 06:59:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:08,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:08,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:08,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996709093] [2022-07-12 06:59:08,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996709093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:08,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:08,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856692477] [2022-07-12 06:59:08,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:08,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:08,697 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:08,752 INFO L93 Difference]: Finished difference Result 627 states and 965 transitions. [2022-07-12 06:59:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:08,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-12 06:59:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:08,754 INFO L225 Difference]: With dead ends: 627 [2022-07-12 06:59:08,755 INFO L226 Difference]: Without dead ends: 429 [2022-07-12 06:59:08,756 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 [2022-07-12 06:59:08,756 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:08,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 422 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-12 06:59:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2022-07-12 06:59:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.5046948356807512) internal successors, (641), 426 states have internal predecessors, (641), 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) [2022-07-12 06:59:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 641 transitions. [2022-07-12 06:59:08,786 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 641 transitions. Word has length 52 [2022-07-12 06:59:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:08,786 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 641 transitions. [2022-07-12 06:59:08,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 641 transitions. [2022-07-12 06:59:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 06:59:08,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:08,788 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] [2022-07-12 06:59:08,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:59:08,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash -195371450, now seen corresponding path program 1 times [2022-07-12 06:59:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:08,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945265952] [2022-07-12 06:59:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945265952] [2022-07-12 06:59:08,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945265952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:08,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:08,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:08,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902607514] [2022-07-12 06:59:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:08,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:08,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:08,841 INFO L87 Difference]: Start difference. First operand 427 states and 641 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:08,931 INFO L93 Difference]: Finished difference Result 1077 states and 1638 transitions. [2022-07-12 06:59:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:08,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-12 06:59:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:08,936 INFO L225 Difference]: With dead ends: 1077 [2022-07-12 06:59:08,937 INFO L226 Difference]: Without dead ends: 749 [2022-07-12 06:59:08,941 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 [2022-07-12 06:59:08,946 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 436 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 [2022-07-12 06:59:08,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:08,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-12 06:59:09,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 747. [2022-07-12 06:59:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.4946380697050938) internal successors, (1115), 746 states have internal predecessors, (1115), 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) [2022-07-12 06:59:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1115 transitions. [2022-07-12 06:59:09,017 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1115 transitions. Word has length 52 [2022-07-12 06:59:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:09,019 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1115 transitions. [2022-07-12 06:59:09,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1115 transitions. [2022-07-12 06:59:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 06:59:09,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:09,028 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] [2022-07-12 06:59:09,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:59:09,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1046972601, now seen corresponding path program 1 times [2022-07-12 06:59:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:09,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577335154] [2022-07-12 06:59:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:09,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:09,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:09,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577335154] [2022-07-12 06:59:09,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577335154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:09,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:09,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31982159] [2022-07-12 06:59:09,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:09,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:09,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:09,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:09,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:09,101 INFO L87 Difference]: Start difference. First operand 747 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:09,172 INFO L93 Difference]: Finished difference Result 1857 states and 2792 transitions. [2022-07-12 06:59:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:09,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-12 06:59:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:09,179 INFO L225 Difference]: With dead ends: 1857 [2022-07-12 06:59:09,179 INFO L226 Difference]: Without dead ends: 1293 [2022-07-12 06:59:09,181 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 [2022-07-12 06:59:09,185 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 436 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 [2022-07-12 06:59:09,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-07-12 06:59:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1291. [2022-07-12 06:59:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 1.4751937984496124) internal successors, (1903), 1290 states have internal predecessors, (1903), 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) [2022-07-12 06:59:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1903 transitions. [2022-07-12 06:59:09,273 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1903 transitions. Word has length 52 [2022-07-12 06:59:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:09,273 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1903 transitions. [2022-07-12 06:59:09,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1903 transitions. [2022-07-12 06:59:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 06:59:09,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:09,276 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] [2022-07-12 06:59:09,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:59:09,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1633425885, now seen corresponding path program 1 times [2022-07-12 06:59:09,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:09,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380236115] [2022-07-12 06:59:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:09,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:09,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380236115] [2022-07-12 06:59:09,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380236115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:09,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:09,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:59:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359835020] [2022-07-12 06:59:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:09,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:09,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:09,374 INFO L87 Difference]: Start difference. First operand 1291 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-12 06:59:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:09,545 INFO L93 Difference]: Finished difference Result 2511 states and 3768 transitions. [2022-07-12 06:59:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:09,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-12 06:59:09,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:09,555 INFO L225 Difference]: With dead ends: 2511 [2022-07-12 06:59:09,556 INFO L226 Difference]: Without dead ends: 2145 [2022-07-12 06:59:09,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:09,557 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 640 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:09,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1142 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:59:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2022-07-12 06:59:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1740. [2022-07-12 06:59:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1739 states have (on average 1.4836112708453133) internal successors, (2580), 1739 states have internal predecessors, (2580), 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) [2022-07-12 06:59:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2580 transitions. [2022-07-12 06:59:09,666 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2580 transitions. Word has length 53 [2022-07-12 06:59:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:09,666 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2580 transitions. [2022-07-12 06:59:09,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-12 06:59:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2580 transitions. [2022-07-12 06:59:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 06:59:09,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:09,667 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] [2022-07-12 06:59:09,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:59:09,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1286312845, now seen corresponding path program 1 times [2022-07-12 06:59:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:09,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891437250] [2022-07-12 06:59:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:09,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:09,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891437250] [2022-07-12 06:59:09,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891437250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:09,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:09,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:59:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895188379] [2022-07-12 06:59:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:09,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:09,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:09,716 INFO L87 Difference]: Start difference. First operand 1740 states and 2580 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-12 06:59:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:09,859 INFO L93 Difference]: Finished difference Result 2960 states and 4445 transitions. [2022-07-12 06:59:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:09,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-12 06:59:09,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:09,867 INFO L225 Difference]: With dead ends: 2960 [2022-07-12 06:59:09,867 INFO L226 Difference]: Without dead ends: 2594 [2022-07-12 06:59:09,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:09,869 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 632 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:09,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 997 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-07-12 06:59:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2085. [2022-07-12 06:59:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2084 states have (on average 1.4889635316698657) internal successors, (3103), 2084 states have internal predecessors, (3103), 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) [2022-07-12 06:59:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3103 transitions. [2022-07-12 06:59:09,995 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3103 transitions. Word has length 53 [2022-07-12 06:59:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:09,996 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3103 transitions. [2022-07-12 06:59:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-12 06:59:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3103 transitions. [2022-07-12 06:59:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 06:59:09,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:09,997 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] [2022-07-12 06:59:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:59:09,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1015763425, now seen corresponding path program 1 times [2022-07-12 06:59:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:09,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123578736] [2022-07-12 06:59:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:09,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:10,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123578736] [2022-07-12 06:59:10,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123578736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:10,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:10,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:59:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225495302] [2022-07-12 06:59:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:10,065 INFO L87 Difference]: Start difference. First operand 2085 states and 3103 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-12 06:59:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:10,241 INFO L93 Difference]: Finished difference Result 3359 states and 5045 transitions. [2022-07-12 06:59:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:10,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-12 06:59:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:10,249 INFO L225 Difference]: With dead ends: 3359 [2022-07-12 06:59:10,249 INFO L226 Difference]: Without dead ends: 2993 [2022-07-12 06:59:10,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:10,251 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 636 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:10,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1068 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-07-12 06:59:10,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2375. [2022-07-12 06:59:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2374 states have (on average 1.4928390901432183) internal successors, (3544), 2374 states have internal predecessors, (3544), 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) [2022-07-12 06:59:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3544 transitions. [2022-07-12 06:59:10,355 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3544 transitions. Word has length 53 [2022-07-12 06:59:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:10,355 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3544 transitions. [2022-07-12 06:59:10,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-12 06:59:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3544 transitions. [2022-07-12 06:59:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 06:59:10,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:10,357 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] [2022-07-12 06:59:10,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:59:10,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1968890954, now seen corresponding path program 1 times [2022-07-12 06:59:10,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:10,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836125990] [2022-07-12 06:59:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:10,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:10,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836125990] [2022-07-12 06:59:10,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836125990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:10,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:10,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:59:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353565613] [2022-07-12 06:59:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:10,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:10,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:10,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:10,435 INFO L87 Difference]: Start difference. First operand 2375 states and 3544 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:10,805 INFO L93 Difference]: Finished difference Result 6743 states and 10099 transitions. [2022-07-12 06:59:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:10,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-12 06:59:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:10,817 INFO L225 Difference]: With dead ends: 6743 [2022-07-12 06:59:10,817 INFO L226 Difference]: Without dead ends: 4395 [2022-07-12 06:59:10,820 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 [2022-07-12 06:59:10,820 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 935 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:10,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 220 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:59:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2022-07-12 06:59:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 4368. [2022-07-12 06:59:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 1.4868330661781544) internal successors, (6493), 4367 states have internal predecessors, (6493), 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) [2022-07-12 06:59:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 6493 transitions. [2022-07-12 06:59:11,071 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 6493 transitions. Word has length 57 [2022-07-12 06:59:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:11,072 INFO L495 AbstractCegarLoop]: Abstraction has 4368 states and 6493 transitions. [2022-07-12 06:59:11,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 6493 transitions. [2022-07-12 06:59:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 06:59:11,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:11,074 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] [2022-07-12 06:59:11,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:59:11,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash -108107112, now seen corresponding path program 1 times [2022-07-12 06:59:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:11,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004635611] [2022-07-12 06:59:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:11,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:11,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004635611] [2022-07-12 06:59:11,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004635611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:11,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:11,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:59:11,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190311725] [2022-07-12 06:59:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:11,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:11,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:11,134 INFO L87 Difference]: Start difference. First operand 4368 states and 6493 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:11,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:11,542 INFO L93 Difference]: Finished difference Result 10465 states and 15544 transitions. [2022-07-12 06:59:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:11,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-12 06:59:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:11,560 INFO L225 Difference]: With dead ends: 10465 [2022-07-12 06:59:11,560 INFO L226 Difference]: Without dead ends: 6142 [2022-07-12 06:59:11,565 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 [2022-07-12 06:59:11,571 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 894 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:11,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 230 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:59:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2022-07-12 06:59:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6108. [2022-07-12 06:59:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6108 states, 6107 states have (on average 1.4735549369575895) internal successors, (8999), 6107 states have internal predecessors, (8999), 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) [2022-07-12 06:59:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6108 states to 6108 states and 8999 transitions. [2022-07-12 06:59:11,960 INFO L78 Accepts]: Start accepts. Automaton has 6108 states and 8999 transitions. Word has length 57 [2022-07-12 06:59:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:11,960 INFO L495 AbstractCegarLoop]: Abstraction has 6108 states and 8999 transitions. [2022-07-12 06:59:11,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 6108 states and 8999 transitions. [2022-07-12 06:59:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-12 06:59:11,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:11,962 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] [2022-07-12 06:59:11,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:59:11,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:11,963 INFO L85 PathProgramCache]: Analyzing trace with hash 871846780, now seen corresponding path program 1 times [2022-07-12 06:59:11,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:11,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152258161] [2022-07-12 06:59:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:11,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:11,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:11,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152258161] [2022-07-12 06:59:11,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152258161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:11,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:11,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:59:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609187812] [2022-07-12 06:59:11,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:59:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:59:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:59:11,996 INFO L87 Difference]: Start difference. First operand 6108 states and 8999 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-12 06:59:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:12,533 INFO L93 Difference]: Finished difference Result 14561 states and 21424 transitions. [2022-07-12 06:59:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:59:12,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-12 06:59:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:12,553 INFO L225 Difference]: With dead ends: 14561 [2022-07-12 06:59:12,553 INFO L226 Difference]: Without dead ends: 8534 [2022-07-12 06:59:12,558 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 [2022-07-12 06:59:12,558 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 849 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:12,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 232 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:59:12,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2022-07-12 06:59:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 8486. [2022-07-12 06:59:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8485 states have (on average 1.4579846788450206) internal successors, (12371), 8485 states have internal predecessors, (12371), 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) [2022-07-12 06:59:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 12371 transitions. [2022-07-12 06:59:13,084 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 12371 transitions. Word has length 58 [2022-07-12 06:59:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:13,084 INFO L495 AbstractCegarLoop]: Abstraction has 8486 states and 12371 transitions. [2022-07-12 06:59:13,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-12 06:59:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 12371 transitions. [2022-07-12 06:59:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:59:13,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:13,087 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] [2022-07-12 06:59:13,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:59:13,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash 536362735, now seen corresponding path program 1 times [2022-07-12 06:59:13,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:13,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573795587] [2022-07-12 06:59:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:13,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573795587] [2022-07-12 06:59:13,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573795587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:13,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:13,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:59:13,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824006408] [2022-07-12 06:59:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:13,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:59:13,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:59:13,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:13,132 INFO L87 Difference]: Start difference. First operand 8486 states and 12371 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-12 06:59:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:15,221 INFO L93 Difference]: Finished difference Result 33048 states and 47772 transitions. [2022-07-12 06:59:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:59:15,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-07-12 06:59:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:15,276 INFO L225 Difference]: With dead ends: 33048 [2022-07-12 06:59:15,276 INFO L226 Difference]: Without dead ends: 28718 [2022-07-12 06:59:15,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:59:15,290 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2069 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:15,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 349 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:59:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28718 states. [2022-07-12 06:59:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28718 to 8506. [2022-07-12 06:59:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8506 states, 8505 states have (on average 1.4573780129335685) internal successors, (12395), 8505 states have internal predecessors, (12395), 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) [2022-07-12 06:59:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8506 states to 8506 states and 12395 transitions. [2022-07-12 06:59:16,097 INFO L78 Accepts]: Start accepts. Automaton has 8506 states and 12395 transitions. Word has length 59 [2022-07-12 06:59:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:16,098 INFO L495 AbstractCegarLoop]: Abstraction has 8506 states and 12395 transitions. [2022-07-12 06:59:16,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-12 06:59:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 8506 states and 12395 transitions. [2022-07-12 06:59:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:59:16,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:16,102 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] [2022-07-12 06:59:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:59:16,102 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash -426804272, now seen corresponding path program 1 times [2022-07-12 06:59:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263477396] [2022-07-12 06:59:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:16,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263477396] [2022-07-12 06:59:16,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263477396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:16,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:16,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:59:16,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221743396] [2022-07-12 06:59:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:16,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:59:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:59:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:16,152 INFO L87 Difference]: Start difference. First operand 8506 states and 12395 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-12 06:59:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:19,738 INFO L93 Difference]: Finished difference Result 39153 states and 56569 transitions. [2022-07-12 06:59:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:59:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-07-12 06:59:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:19,814 INFO L225 Difference]: With dead ends: 39153 [2022-07-12 06:59:19,814 INFO L226 Difference]: Without dead ends: 34911 [2022-07-12 06:59:19,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:59:19,827 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2359 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:19,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 395 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:59:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34911 states. [2022-07-12 06:59:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34911 to 8616. [2022-07-12 06:59:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8616 states, 8615 states have (on average 1.4552524666279745) internal successors, (12537), 8615 states have internal predecessors, (12537), 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) [2022-07-12 06:59:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 12537 transitions. [2022-07-12 06:59:20,824 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 12537 transitions. Word has length 59 [2022-07-12 06:59:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:20,824 INFO L495 AbstractCegarLoop]: Abstraction has 8616 states and 12537 transitions. [2022-07-12 06:59:20,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-12 06:59:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 12537 transitions. [2022-07-12 06:59:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:59:20,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:20,828 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] [2022-07-12 06:59:20,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:59:20,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash -974429839, now seen corresponding path program 1 times [2022-07-12 06:59:20,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:20,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210333145] [2022-07-12 06:59:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:20,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:20,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210333145] [2022-07-12 06:59:20,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210333145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:20,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:20,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:59:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565114889] [2022-07-12 06:59:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:59:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:59:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:59:20,871 INFO L87 Difference]: Start difference. First operand 8616 states and 12537 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-12 06:59:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:25,966 INFO L93 Difference]: Finished difference Result 45194 states and 65263 transitions. [2022-07-12 06:59:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:59:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2022-07-12 06:59:25,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:26,098 INFO L225 Difference]: With dead ends: 45194 [2022-07-12 06:59:26,099 INFO L226 Difference]: Without dead ends: 42096 [2022-07-12 06:59:26,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:59:26,117 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2722 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:26,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 412 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:59:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42096 states. [2022-07-12 06:59:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42096 to 8672. [2022-07-12 06:59:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8672 states, 8671 states have (on average 1.4538115557605813) internal successors, (12606), 8671 states have internal predecessors, (12606), 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) [2022-07-12 06:59:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12606 transitions. [2022-07-12 06:59:27,325 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12606 transitions. Word has length 59 [2022-07-12 06:59:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:27,325 INFO L495 AbstractCegarLoop]: Abstraction has 8672 states and 12606 transitions. [2022-07-12 06:59:27,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-12 06:59:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12606 transitions. [2022-07-12 06:59:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 06:59:27,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:27,329 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] [2022-07-12 06:59:27,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:59:27,329 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1695106365, now seen corresponding path program 1 times [2022-07-12 06:59:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:27,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822192228] [2022-07-12 06:59:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:27,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:27,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:27,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822192228] [2022-07-12 06:59:27,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822192228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:27,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:27,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:59:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548436005] [2022-07-12 06:59:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:27,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:59:27,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:59:27,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:59:27,447 INFO L87 Difference]: Start difference. First operand 8672 states and 12606 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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) [2022-07-12 06:59:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:31,789 INFO L93 Difference]: Finished difference Result 33360 states and 48326 transitions. [2022-07-12 06:59:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 06:59:31,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2022-07-12 06:59:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:31,826 INFO L225 Difference]: With dead ends: 33360 [2022-07-12 06:59:31,826 INFO L226 Difference]: Without dead ends: 26207 [2022-07-12 06:59:31,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-12 06:59:31,838 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2061 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:31,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 1575 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 06:59:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26207 states. [2022-07-12 06:59:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26207 to 8512. [2022-07-12 06:59:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8512 states, 8511 states have (on average 1.450945834802021) internal successors, (12349), 8511 states have internal predecessors, (12349), 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) [2022-07-12 06:59:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8512 states to 8512 states and 12349 transitions. [2022-07-12 06:59:33,087 INFO L78 Accepts]: Start accepts. Automaton has 8512 states and 12349 transitions. Word has length 61 [2022-07-12 06:59:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:33,087 INFO L495 AbstractCegarLoop]: Abstraction has 8512 states and 12349 transitions. [2022-07-12 06:59:33,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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) [2022-07-12 06:59:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8512 states and 12349 transitions. [2022-07-12 06:59:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 06:59:33,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:33,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:33,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:59:33,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:33,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1748259780, now seen corresponding path program 1 times [2022-07-12 06:59:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:33,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196418196] [2022-07-12 06:59:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:33,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:33,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196418196] [2022-07-12 06:59:33,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196418196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:33,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:33,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:59:33,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252058257] [2022-07-12 06:59:33,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:33,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:59:33,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:33,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:59:33,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:59:33,224 INFO L87 Difference]: Start difference. First operand 8512 states and 12349 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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) [2022-07-12 06:59:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:38,330 INFO L93 Difference]: Finished difference Result 28682 states and 41264 transitions. [2022-07-12 06:59:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 06:59:38,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2022-07-12 06:59:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:38,374 INFO L225 Difference]: With dead ends: 28682 [2022-07-12 06:59:38,375 INFO L226 Difference]: Without dead ends: 21400 [2022-07-12 06:59:38,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-12 06:59:38,395 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1944 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:38,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 1616 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:59:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21400 states. [2022-07-12 06:59:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21400 to 8231. [2022-07-12 06:59:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 8230 states have (on average 1.4487241798298907) internal successors, (11923), 8230 states have internal predecessors, (11923), 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) [2022-07-12 06:59:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 11923 transitions. [2022-07-12 06:59:40,185 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 11923 transitions. Word has length 61 [2022-07-12 06:59:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:40,185 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 11923 transitions. [2022-07-12 06:59:40,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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) [2022-07-12 06:59:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 11923 transitions. [2022-07-12 06:59:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 06:59:40,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:40,188 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] [2022-07-12 06:59:40,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:59:40,188 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash 11490693, now seen corresponding path program 1 times [2022-07-12 06:59:40,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:40,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113447488] [2022-07-12 06:59:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:40,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113447488] [2022-07-12 06:59:40,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113447488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:40,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:40,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:59:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834595730] [2022-07-12 06:59:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:40,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:59:40,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:59:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:59:40,318 INFO L87 Difference]: Start difference. First operand 8231 states and 11923 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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) [2022-07-12 06:59:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:44,979 INFO L93 Difference]: Finished difference Result 28808 states and 41691 transitions. [2022-07-12 06:59:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 06:59:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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 61 [2022-07-12 06:59:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:45,010 INFO L225 Difference]: With dead ends: 28808 [2022-07-12 06:59:45,010 INFO L226 Difference]: Without dead ends: 21732 [2022-07-12 06:59:45,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-07-12 06:59:45,027 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2158 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:45,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 1332 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 06:59:45,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21732 states. [2022-07-12 06:59:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21732 to 8082. [2022-07-12 06:59:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8082 states, 8081 states have (on average 1.4493255785175103) internal successors, (11712), 8081 states have internal predecessors, (11712), 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) [2022-07-12 06:59:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8082 states to 8082 states and 11712 transitions. [2022-07-12 06:59:46,527 INFO L78 Accepts]: Start accepts. Automaton has 8082 states and 11712 transitions. Word has length 61 [2022-07-12 06:59:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:46,527 INFO L495 AbstractCegarLoop]: Abstraction has 8082 states and 11712 transitions. [2022-07-12 06:59:46,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 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) [2022-07-12 06:59:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8082 states and 11712 transitions. [2022-07-12 06:59:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 06:59:46,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:46,530 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] [2022-07-12 06:59:46,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:59:46,530 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash -746765663, now seen corresponding path program 1 times [2022-07-12 06:59:46,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:46,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688230868] [2022-07-12 06:59:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:46,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688230868] [2022-07-12 06:59:46,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688230868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:46,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:46,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21038345] [2022-07-12 06:59:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:46,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:46,552 INFO L87 Difference]: Start difference. First operand 8082 states and 11712 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 06:59:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:48,025 INFO L93 Difference]: Finished difference Result 11129 states and 16085 transitions. [2022-07-12 06:59:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:48,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-12 06:59:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:48,034 INFO L225 Difference]: With dead ends: 11129 [2022-07-12 06:59:48,035 INFO L226 Difference]: Without dead ends: 7899 [2022-07-12 06:59:48,038 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 [2022-07-12 06:59:48,038 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 152 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:48,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 528 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2022-07-12 06:59:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7897. [2022-07-12 06:59:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7897 states, 7896 states have (on average 1.4223657548125632) internal successors, (11231), 7896 states have internal predecessors, (11231), 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) [2022-07-12 06:59:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 11231 transitions. [2022-07-12 06:59:49,480 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 11231 transitions. Word has length 62 [2022-07-12 06:59:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:49,480 INFO L495 AbstractCegarLoop]: Abstraction has 7897 states and 11231 transitions. [2022-07-12 06:59:49,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 06:59:49,481 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 11231 transitions. [2022-07-12 06:59:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 06:59:49,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:49,483 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] [2022-07-12 06:59:49,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:59:49,483 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash -691619625, now seen corresponding path program 1 times [2022-07-12 06:59:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:49,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65806900] [2022-07-12 06:59:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:49,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:49,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65806900] [2022-07-12 06:59:49,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65806900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:49,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:49,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677385170] [2022-07-12 06:59:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:49,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:49,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:49,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:49,504 INFO L87 Difference]: Start difference. First operand 7897 states and 11231 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 06:59:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:50,777 INFO L93 Difference]: Finished difference Result 11306 states and 16076 transitions. [2022-07-12 06:59:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:50,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-12 06:59:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:50,788 INFO L225 Difference]: With dead ends: 11306 [2022-07-12 06:59:50,788 INFO L226 Difference]: Without dead ends: 7025 [2022-07-12 06:59:50,794 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 [2022-07-12 06:59:50,794 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 138 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:50,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 520 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2022-07-12 06:59:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2022-07-12 06:59:52,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7023 states, 7022 states have (on average 1.400598120193677) internal successors, (9835), 7022 states have internal predecessors, (9835), 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) [2022-07-12 06:59:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9835 transitions. [2022-07-12 06:59:52,245 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9835 transitions. Word has length 62 [2022-07-12 06:59:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:52,245 INFO L495 AbstractCegarLoop]: Abstraction has 7023 states and 9835 transitions. [2022-07-12 06:59:52,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 06:59:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9835 transitions. [2022-07-12 06:59:52,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 06:59:52,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:52,257 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] [2022-07-12 06:59:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:59:52,258 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:52,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1051063940, now seen corresponding path program 1 times [2022-07-12 06:59:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:52,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825215371] [2022-07-12 06:59:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:52,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:52,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:52,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825215371] [2022-07-12 06:59:52,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825215371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:52,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:52,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011653155] [2022-07-12 06:59:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:52,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:52,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:52,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:52,310 INFO L87 Difference]: Start difference. First operand 7023 states and 9835 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 06:59:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:53,248 INFO L93 Difference]: Finished difference Result 9402 states and 13165 transitions. [2022-07-12 06:59:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:53,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-07-12 06:59:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:53,255 INFO L225 Difference]: With dead ends: 9402 [2022-07-12 06:59:53,255 INFO L226 Difference]: Without dead ends: 5420 [2022-07-12 06:59:53,259 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 [2022-07-12 06:59:53,259 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 150 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:53,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 531 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2022-07-12 06:59:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 5418. [2022-07-12 06:59:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 1.3782536459294812) internal successors, (7466), 5417 states have internal predecessors, (7466), 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) [2022-07-12 06:59:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 7466 transitions. [2022-07-12 06:59:54,342 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 7466 transitions. Word has length 62 [2022-07-12 06:59:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:54,342 INFO L495 AbstractCegarLoop]: Abstraction has 5418 states and 7466 transitions. [2022-07-12 06:59:54,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-07-12 06:59:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 7466 transitions. [2022-07-12 06:59:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:59:54,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:54,346 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] [2022-07-12 06:59:54,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:59:54,346 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -751537894, now seen corresponding path program 1 times [2022-07-12 06:59:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:54,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852561529] [2022-07-12 06:59:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:54,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:54,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852561529] [2022-07-12 06:59:54,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852561529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:54,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:54,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:59:54,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273411949] [2022-07-12 06:59:54,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:54,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:59:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:59:54,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:59:54,418 INFO L87 Difference]: Start difference. First operand 5418 states and 7466 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 06:59:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:55,724 INFO L93 Difference]: Finished difference Result 10107 states and 14003 transitions. [2022-07-12 06:59:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:59:55,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-12 06:59:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:55,733 INFO L225 Difference]: With dead ends: 10107 [2022-07-12 06:59:55,734 INFO L226 Difference]: Without dead ends: 7374 [2022-07-12 06:59:55,737 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 [2022-07-12 06:59:55,738 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 175 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:55,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 350 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:59:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7374 states. [2022-07-12 06:59:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7374 to 5197. [2022-07-12 06:59:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3775981524249423) internal successors, (7158), 5196 states have internal predecessors, (7158), 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) [2022-07-12 06:59:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7158 transitions. [2022-07-12 06:59:56,630 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7158 transitions. Word has length 63 [2022-07-12 06:59:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:56,631 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7158 transitions. [2022-07-12 06:59:56,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 06:59:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7158 transitions. [2022-07-12 06:59:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:59:56,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:56,633 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] [2022-07-12 06:59:56,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:59:56,633 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:59:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash 296287221, now seen corresponding path program 1 times [2022-07-12 06:59:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:56,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96014377] [2022-07-12 06:59:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:56,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:57,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:57,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96014377] [2022-07-12 06:59:57,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96014377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:57,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:57,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-12 06:59:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797221212] [2022-07-12 06:59:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:57,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 06:59:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 06:59:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-12 06:59:57,183 INFO L87 Difference]: Start difference. First operand 5197 states and 7158 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2022-07-12 07:00:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:02,162 INFO L93 Difference]: Finished difference Result 10147 states and 14063 transitions. [2022-07-12 07:00:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 07:00:02,163 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 63 [2022-07-12 07:00:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:02,181 INFO L225 Difference]: With dead ends: 10147 [2022-07-12 07:00:02,182 INFO L226 Difference]: Without dead ends: 10032 [2022-07-12 07:00:02,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=393, Invalid=1863, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 07:00:02,188 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2690 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 6182 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:02,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 6182 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 07:00:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2022-07-12 07:00:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 5197. [2022-07-12 07:00:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3774056966897614) internal successors, (7157), 5196 states have internal predecessors, (7157), 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) [2022-07-12 07:00:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7157 transitions. [2022-07-12 07:00:03,258 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7157 transitions. Word has length 63 [2022-07-12 07:00:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:03,258 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7157 transitions. [2022-07-12 07:00:03,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2022-07-12 07:00:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7157 transitions. [2022-07-12 07:00:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:00:03,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:03,261 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] [2022-07-12 07:00:03,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 07:00:03,261 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:03,262 INFO L85 PathProgramCache]: Analyzing trace with hash -678356547, now seen corresponding path program 1 times [2022-07-12 07:00:03,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:03,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981771217] [2022-07-12 07:00:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:03,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:03,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981771217] [2022-07-12 07:00:03,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981771217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:03,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:03,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-12 07:00:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793100625] [2022-07-12 07:00:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:03,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 07:00:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 07:00:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-07-12 07:00:03,790 INFO L87 Difference]: Start difference. First operand 5197 states and 7157 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2022-07-12 07:00:09,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:09,327 INFO L93 Difference]: Finished difference Result 9021 states and 12491 transitions. [2022-07-12 07:00:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 07:00:09,328 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 63 [2022-07-12 07:00:09,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:09,338 INFO L225 Difference]: With dead ends: 9021 [2022-07-12 07:00:09,338 INFO L226 Difference]: Without dead ends: 8906 [2022-07-12 07:00:09,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 07:00:09,340 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1705 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 6966 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:09,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 6966 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 07:00:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2022-07-12 07:00:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 5197. [2022-07-12 07:00:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.3772132409545805) internal successors, (7156), 5196 states have internal predecessors, (7156), 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) [2022-07-12 07:00:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7156 transitions. [2022-07-12 07:00:10,365 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7156 transitions. Word has length 63 [2022-07-12 07:00:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:10,366 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7156 transitions. [2022-07-12 07:00:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2022-07-12 07:00:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7156 transitions. [2022-07-12 07:00:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:00:10,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:10,368 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] [2022-07-12 07:00:10,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 07:00:10,368 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 639398585, now seen corresponding path program 1 times [2022-07-12 07:00:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:10,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530899332] [2022-07-12 07:00:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:10,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:10,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530899332] [2022-07-12 07:00:10,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530899332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:10,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:10,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-12 07:00:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813393004] [2022-07-12 07:00:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:10,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 07:00:10,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:10,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 07:00:10,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-12 07:00:10,852 INFO L87 Difference]: Start difference. First operand 5197 states and 7156 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2022-07-12 07:00:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:15,817 INFO L93 Difference]: Finished difference Result 8720 states and 12045 transitions. [2022-07-12 07:00:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 07:00:15,818 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 63 [2022-07-12 07:00:15,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:15,830 INFO L225 Difference]: With dead ends: 8720 [2022-07-12 07:00:15,830 INFO L226 Difference]: Without dead ends: 8605 [2022-07-12 07:00:15,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2022-07-12 07:00:15,834 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2217 mSDsluCounter, 7324 mSDsCounter, 0 mSdLazyCounter, 4353 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:15,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 7834 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4353 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 07:00:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8605 states. [2022-07-12 07:00:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8605 to 5203. [2022-07-12 07:00:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.3769703960015378) internal successors, (7163), 5202 states have internal predecessors, (7163), 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) [2022-07-12 07:00:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7163 transitions. [2022-07-12 07:00:17,026 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7163 transitions. Word has length 63 [2022-07-12 07:00:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:17,027 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 7163 transitions. [2022-07-12 07:00:17,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2022-07-12 07:00:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7163 transitions. [2022-07-12 07:00:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:00:17,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:17,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:00:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 07:00:17,030 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash -422382988, now seen corresponding path program 1 times [2022-07-12 07:00:17,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:17,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195767925] [2022-07-12 07:00:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195767925] [2022-07-12 07:00:17,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195767925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:17,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:17,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:00:17,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441901021] [2022-07-12 07:00:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:17,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:00:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:00:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:17,051 INFO L87 Difference]: Start difference. First operand 5203 states and 7163 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 07:00:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:18,599 INFO L93 Difference]: Finished difference Result 9670 states and 13392 transitions. [2022-07-12 07:00:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:00:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-12 07:00:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:18,609 INFO L225 Difference]: With dead ends: 9670 [2022-07-12 07:00:18,609 INFO L226 Difference]: Without dead ends: 7060 [2022-07-12 07:00:18,613 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 [2022-07-12 07:00:18,615 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 177 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 351 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7060 states. [2022-07-12 07:00:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7060 to 4934. [2022-07-12 07:00:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 1.3768497871477803) internal successors, (6792), 4933 states have internal predecessors, (6792), 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) [2022-07-12 07:00:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 6792 transitions. [2022-07-12 07:00:19,789 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 6792 transitions. Word has length 63 [2022-07-12 07:00:19,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:19,790 INFO L495 AbstractCegarLoop]: Abstraction has 4934 states and 6792 transitions. [2022-07-12 07:00:19,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 07:00:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 6792 transitions. [2022-07-12 07:00:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:00:19,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:19,792 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] [2022-07-12 07:00:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 07:00:19,792 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash 393964366, now seen corresponding path program 1 times [2022-07-12 07:00:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:19,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517645636] [2022-07-12 07:00:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:19,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:19,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517645636] [2022-07-12 07:00:19,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517645636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:19,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:19,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:00:19,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2732972] [2022-07-12 07:00:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:19,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:00:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:00:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:19,819 INFO L87 Difference]: Start difference. First operand 4934 states and 6792 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 07:00:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:21,049 INFO L93 Difference]: Finished difference Result 7477 states and 10307 transitions. [2022-07-12 07:00:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:00:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-12 07:00:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:21,057 INFO L225 Difference]: With dead ends: 7477 [2022-07-12 07:00:21,057 INFO L226 Difference]: Without dead ends: 5683 [2022-07-12 07:00:21,059 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 [2022-07-12 07:00:21,061 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 165 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:21,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 327 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5683 states. [2022-07-12 07:00:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5683 to 4717. [2022-07-12 07:00:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 4716 states have (on average 1.3770144189991518) internal successors, (6494), 4716 states have internal predecessors, (6494), 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) [2022-07-12 07:00:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6494 transitions. [2022-07-12 07:00:22,079 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6494 transitions. Word has length 63 [2022-07-12 07:00:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:22,080 INFO L495 AbstractCegarLoop]: Abstraction has 4717 states and 6494 transitions. [2022-07-12 07:00:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-12 07:00:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6494 transitions. [2022-07-12 07:00:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 07:00:22,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:22,081 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] [2022-07-12 07:00:22,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 07:00:22,082 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:22,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1222962444, now seen corresponding path program 1 times [2022-07-12 07:00:22,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:22,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549398832] [2022-07-12 07:00:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:22,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:22,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549398832] [2022-07-12 07:00:22,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549398832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:22,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:22,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:00:22,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217969054] [2022-07-12 07:00:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:22,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:00:22,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:22,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:00:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:00:22,353 INFO L87 Difference]: Start difference. First operand 4717 states and 6494 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2022-07-12 07:00:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:25,598 INFO L93 Difference]: Finished difference Result 9198 states and 12735 transitions. [2022-07-12 07:00:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 07:00:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 [2022-07-12 07:00:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:25,607 INFO L225 Difference]: With dead ends: 9198 [2022-07-12 07:00:25,608 INFO L226 Difference]: Without dead ends: 8524 [2022-07-12 07:00:25,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-12 07:00:25,610 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1687 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:25,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 2581 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:00:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8524 states. [2022-07-12 07:00:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8524 to 4600. [2022-07-12 07:00:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 1.3772559252011307) internal successors, (6334), 4599 states have internal predecessors, (6334), 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) [2022-07-12 07:00:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6334 transitions. [2022-07-12 07:00:26,734 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6334 transitions. Word has length 64 [2022-07-12 07:00:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:26,734 INFO L495 AbstractCegarLoop]: Abstraction has 4600 states and 6334 transitions. [2022-07-12 07:00:26,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2022-07-12 07:00:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6334 transitions. [2022-07-12 07:00:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 07:00:26,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:26,736 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] [2022-07-12 07:00:26,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 07:00:26,737 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1481127882, now seen corresponding path program 1 times [2022-07-12 07:00:26,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638613594] [2022-07-12 07:00:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:26,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:27,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:27,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638613594] [2022-07-12 07:00:27,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638613594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:27,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:27,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 07:00:27,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667223904] [2022-07-12 07:00:27,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:27,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 07:00:27,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:27,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 07:00:27,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-12 07:00:27,023 INFO L87 Difference]: Start difference. First operand 4600 states and 6334 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 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) [2022-07-12 07:00:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:32,171 INFO L93 Difference]: Finished difference Result 11022 states and 15289 transitions. [2022-07-12 07:00:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 07:00:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 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 [2022-07-12 07:00:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:32,185 INFO L225 Difference]: With dead ends: 11022 [2022-07-12 07:00:32,185 INFO L226 Difference]: Without dead ends: 10585 [2022-07-12 07:00:32,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=378, Invalid=1344, Unknown=0, NotChecked=0, Total=1722 [2022-07-12 07:00:32,189 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 2060 mSDsluCounter, 5371 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 6068 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:32,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 6068 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 07:00:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2022-07-12 07:00:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 4521. [2022-07-12 07:00:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 1.3769911504424779) internal successors, (6224), 4520 states have internal predecessors, (6224), 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) [2022-07-12 07:00:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6224 transitions. [2022-07-12 07:00:33,604 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6224 transitions. Word has length 64 [2022-07-12 07:00:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:33,605 INFO L495 AbstractCegarLoop]: Abstraction has 4521 states and 6224 transitions. [2022-07-12 07:00:33,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 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) [2022-07-12 07:00:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6224 transitions. [2022-07-12 07:00:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:00:33,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:33,607 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] [2022-07-12 07:00:33,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 07:00:33,607 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:33,608 INFO L85 PathProgramCache]: Analyzing trace with hash 880460014, now seen corresponding path program 1 times [2022-07-12 07:00:33,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:33,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663408206] [2022-07-12 07:00:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:33,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:33,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:33,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663408206] [2022-07-12 07:00:33,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663408206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:33,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:33,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:00:33,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489570038] [2022-07-12 07:00:33,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:33,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:00:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:00:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:00:33,681 INFO L87 Difference]: Start difference. First operand 4521 states and 6224 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) [2022-07-12 07:00:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:35,058 INFO L93 Difference]: Finished difference Result 4527 states and 6227 transitions. [2022-07-12 07:00:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:00:35,059 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 [2022-07-12 07:00:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:35,063 INFO L225 Difference]: With dead ends: 4527 [2022-07-12 07:00:35,063 INFO L226 Difference]: Without dead ends: 4084 [2022-07-12 07:00:35,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:00:35,065 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 485 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:35,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 623 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:00:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2022-07-12 07:00:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 4080. [2022-07-12 07:00:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 1.380485413091444) internal successors, (5631), 4079 states have internal predecessors, (5631), 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) [2022-07-12 07:00:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 5631 transitions. [2022-07-12 07:00:36,314 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 5631 transitions. Word has length 67 [2022-07-12 07:00:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:36,314 INFO L495 AbstractCegarLoop]: Abstraction has 4080 states and 5631 transitions. [2022-07-12 07:00:36,314 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) [2022-07-12 07:00:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 5631 transitions. [2022-07-12 07:00:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:00:36,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:36,316 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] [2022-07-12 07:00:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 07:00:36,317 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:36,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:36,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1617522588, now seen corresponding path program 1 times [2022-07-12 07:00:36,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:36,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185829273] [2022-07-12 07:00:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:36,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:36,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:36,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185829273] [2022-07-12 07:00:36,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185829273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:36,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:36,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:00:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338702460] [2022-07-12 07:00:36,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:36,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:00:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:00:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:36,390 INFO L87 Difference]: Start difference. First operand 4080 states and 5631 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-07-12 07:00:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:38,892 INFO L93 Difference]: Finished difference Result 10754 states and 14967 transitions. [2022-07-12 07:00:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:00:38,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 [2022-07-12 07:00:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:38,903 INFO L225 Difference]: With dead ends: 10754 [2022-07-12 07:00:38,903 INFO L226 Difference]: Without dead ends: 7262 [2022-07-12 07:00:38,906 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 [2022-07-12 07:00:38,913 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 119 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:38,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 434 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7262 states. [2022-07-12 07:00:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7262 to 6808. [2022-07-12 07:00:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6808 states, 6807 states have (on average 1.3844571764360218) internal successors, (9424), 6807 states have internal predecessors, (9424), 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) [2022-07-12 07:00:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6808 states to 6808 states and 9424 transitions. [2022-07-12 07:00:41,189 INFO L78 Accepts]: Start accepts. Automaton has 6808 states and 9424 transitions. Word has length 70 [2022-07-12 07:00:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:41,189 INFO L495 AbstractCegarLoop]: Abstraction has 6808 states and 9424 transitions. [2022-07-12 07:00:41,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-07-12 07:00:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6808 states and 9424 transitions. [2022-07-12 07:00:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:00:41,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:41,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:00:41,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 07:00:41,192 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:41,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash 121806462, now seen corresponding path program 1 times [2022-07-12 07:00:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:41,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096624538] [2022-07-12 07:00:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:41,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096624538] [2022-07-12 07:00:41,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096624538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:41,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:41,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:00:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785010786] [2022-07-12 07:00:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:41,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:00:41,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:00:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:41,246 INFO L87 Difference]: Start difference. First operand 6808 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-07-12 07:00:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:45,268 INFO L93 Difference]: Finished difference Result 18628 states and 25870 transitions. [2022-07-12 07:00:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:00:45,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2022-07-12 07:00:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:45,283 INFO L225 Difference]: With dead ends: 18628 [2022-07-12 07:00:45,283 INFO L226 Difference]: Without dead ends: 12408 [2022-07-12 07:00:45,288 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 [2022-07-12 07:00:45,289 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 109 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:45,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 424 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2022-07-12 07:00:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 11502. [2022-07-12 07:00:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11502 states, 11501 states have (on average 1.382314581340753) internal successors, (15898), 11501 states have internal predecessors, (15898), 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) [2022-07-12 07:00:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11502 states to 11502 states and 15898 transitions. [2022-07-12 07:00:48,943 INFO L78 Accepts]: Start accepts. Automaton has 11502 states and 15898 transitions. Word has length 71 [2022-07-12 07:00:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:00:48,943 INFO L495 AbstractCegarLoop]: Abstraction has 11502 states and 15898 transitions. [2022-07-12 07:00:48,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-07-12 07:00:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 11502 states and 15898 transitions. [2022-07-12 07:00:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 07:00:48,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:00:48,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:00:48,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 07:00:48,955 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:00:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:00:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash -577663364, now seen corresponding path program 1 times [2022-07-12 07:00:48,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:00:48,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955217923] [2022-07-12 07:00:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:00:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:00:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:00:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:00:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:00:49,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955217923] [2022-07-12 07:00:49,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955217923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:00:49,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:00:49,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:00:49,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685413729] [2022-07-12 07:00:49,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:00:49,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:00:49,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:00:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:00:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:00:49,006 INFO L87 Difference]: Start difference. First operand 11502 states and 15898 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-07-12 07:00:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:55,880 INFO L93 Difference]: Finished difference Result 31274 states and 43068 transitions. [2022-07-12 07:00:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:00:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-07-12 07:00:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:55,906 INFO L225 Difference]: With dead ends: 31274 [2022-07-12 07:00:55,906 INFO L226 Difference]: Without dead ends: 20244 [2022-07-12 07:00:55,916 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 [2022-07-12 07:00:55,917 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 113 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:55,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 425 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:00:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20244 states. [2022-07-12 07:01:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20244 to 18370. [2022-07-12 07:01:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18370 states, 18369 states have (on average 1.3615874571288584) internal successors, (25011), 18369 states have internal predecessors, (25011), 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) [2022-07-12 07:01:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18370 states to 18370 states and 25011 transitions. [2022-07-12 07:01:02,211 INFO L78 Accepts]: Start accepts. Automaton has 18370 states and 25011 transitions. Word has length 73 [2022-07-12 07:01:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:01:02,211 INFO L495 AbstractCegarLoop]: Abstraction has 18370 states and 25011 transitions. [2022-07-12 07:01:02,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-07-12 07:01:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18370 states and 25011 transitions. [2022-07-12 07:01:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 07:01:02,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:01:02,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:01:02,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 07:01:02,214 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:01:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:01:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -686006937, now seen corresponding path program 1 times [2022-07-12 07:01:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:01:02,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804257377] [2022-07-12 07:01:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:01:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:01:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:01:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:02,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:01:02,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804257377] [2022-07-12 07:01:02,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804257377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:01:02,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:01:02,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:01:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340716747] [2022-07-12 07:01:02,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:01:02,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:01:02,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:01:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:01:02,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:01:02,280 INFO L87 Difference]: Start difference. First operand 18370 states and 25011 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:01:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:01:16,924 INFO L93 Difference]: Finished difference Result 39464 states and 52793 transitions. [2022-07-12 07:01:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:01:16,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-07-12 07:01:16,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:01:16,980 INFO L225 Difference]: With dead ends: 39464 [2022-07-12 07:01:16,981 INFO L226 Difference]: Without dead ends: 39462 [2022-07-12 07:01:16,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:01:16,992 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 332 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:01:16,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 987 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:01:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39462 states. [2022-07-12 07:01:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39462 to 20338. [2022-07-12 07:01:24,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20338 states, 20337 states have (on average 1.3265968431922113) internal successors, (26979), 20337 states have internal predecessors, (26979), 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) [2022-07-12 07:01:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20338 states to 20338 states and 26979 transitions. [2022-07-12 07:01:24,781 INFO L78 Accepts]: Start accepts. Automaton has 20338 states and 26979 transitions. Word has length 74 [2022-07-12 07:01:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:01:24,781 INFO L495 AbstractCegarLoop]: Abstraction has 20338 states and 26979 transitions. [2022-07-12 07:01:24,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:01:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 20338 states and 26979 transitions. [2022-07-12 07:01:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 07:01:24,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:01:24,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:01:24,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 07:01:24,784 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:01:24,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:01:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1483002414, now seen corresponding path program 1 times [2022-07-12 07:01:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:01:24,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802475471] [2022-07-12 07:01:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:01:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:01:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:01:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:01:24,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802475471] [2022-07-12 07:01:24,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802475471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:01:24,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:01:24,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:01:24,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243639087] [2022-07-12 07:01:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:01:24,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:01:24,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:01:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:01:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:01:24,824 INFO L87 Difference]: Start difference. First operand 20338 states and 26979 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-07-12 07:01:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:01:36,254 INFO L93 Difference]: Finished difference Result 50174 states and 66365 transitions. [2022-07-12 07:01:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:01:36,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-07-12 07:01:36,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:01:36,301 INFO L225 Difference]: With dead ends: 50174 [2022-07-12 07:01:36,302 INFO L226 Difference]: Without dead ends: 30308 [2022-07-12 07:01:36,320 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 [2022-07-12 07:01:36,320 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 130 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:01:36,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 316 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:01:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30308 states. [2022-07-12 07:01:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30308 to 29978. [2022-07-12 07:01:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29978 states, 29977 states have (on average 1.2988291023117724) internal successors, (38935), 29977 states have internal predecessors, (38935), 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) [2022-07-12 07:01:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29978 states to 29978 states and 38935 transitions. [2022-07-12 07:01:47,471 INFO L78 Accepts]: Start accepts. Automaton has 29978 states and 38935 transitions. Word has length 75 [2022-07-12 07:01:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:01:47,471 INFO L495 AbstractCegarLoop]: Abstraction has 29978 states and 38935 transitions. [2022-07-12 07:01:47,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-07-12 07:01:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand 29978 states and 38935 transitions. [2022-07-12 07:01:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 07:01:47,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:01:47,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:01:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 07:01:47,479 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:01:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:01:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1263057428, now seen corresponding path program 1 times [2022-07-12 07:01:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:01:47,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858128045] [2022-07-12 07:01:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:01:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:01:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:01:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:47,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:01:47,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858128045] [2022-07-12 07:01:47,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858128045] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:01:47,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988246498] [2022-07-12 07:01:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:01:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:01:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:01:47,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:01:47,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 07:01:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:01:47,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 07:01:47,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:01:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:48,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:01:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:01:49,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988246498] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:01:49,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:01:49,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-07-12 07:01:49,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647018174] [2022-07-12 07:01:49,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:01:49,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 07:01:49,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:01:49,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 07:01:49,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 07:01:49,653 INFO L87 Difference]: Start difference. First operand 29978 states and 38935 transitions. Second operand has 33 states, 33 states have (on average 7.515151515151516) internal successors, (248), 32 states have internal predecessors, (248), 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)