./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.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 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:19:04,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:19:04,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:19:04,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:19:04,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:19:04,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:19:04,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:19:04,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:19:04,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:19:04,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:19:04,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:19:04,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:19:04,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:19:04,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:19:04,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:19:04,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:19:04,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:19:04,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:19:04,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:19:04,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:19:04,363 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:19:04,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:19:04,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:19:04,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:19:04,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:19:04,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:19:04,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:19:04,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:19:04,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:19:04,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:19:04,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:19:04,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:19:04,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:19:04,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:19:04,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:19:04,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:19:04,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:19:04,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:19:04,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:19:04,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:19:04,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:19:04,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:19:04,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:19:04,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:19:04,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:19:04,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:19:04,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:19:04,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:19:04,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:19:04,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:19:04,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:19:04,416 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:19:04,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:19:04,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:19:04,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:19:04,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:19:04,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:19:04,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:19:04,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:19:04,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:19:04,418 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:19:04,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:19:04,418 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:19:04,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:19:04,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:19:04,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:19:04,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:19:04,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:19:04,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:19:04,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:19:04,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:19:04,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:19:04,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:19:04,420 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:19:04,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:19:04,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:19:04,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2022-07-13 18:19:04,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:19:04,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:19:04,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:19:04,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:19:04,645 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:19:04,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2022-07-13 18:19:04,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb01985be/5cf197a33ace482b9d922664d2e34d63/FLAG4ed627f5c [2022-07-13 18:19:05,055 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:19:05,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2022-07-13 18:19:05,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb01985be/5cf197a33ace482b9d922664d2e34d63/FLAG4ed627f5c [2022-07-13 18:19:05,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb01985be/5cf197a33ace482b9d922664d2e34d63 [2022-07-13 18:19:05,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:19:05,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:19:05,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:19:05,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:19:05,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:19:05,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50291160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05, skipping insertion in model container [2022-07-13 18:19:05,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:19:05,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:19:05,705 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/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2022-07-13 18:19:05,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:19:05,712 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:19:05,766 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/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2022-07-13 18:19:05,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:19:05,776 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:19:05,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05 WrapperNode [2022-07-13 18:19:05,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:19:05,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:19:05,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:19:05,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:19:05,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,871 INFO L137 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 415 [2022-07-13 18:19:05,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:19:05,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:19:05,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:19:05,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:19:05,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:19:05,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:19:05,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:19:05,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:19:05,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (1/1) ... [2022-07-13 18:19:05,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:19:05,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:05,972 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) [2022-07-13 18:19:05,974 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 [2022-07-13 18:19:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:19:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2022-07-13 18:19:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2022-07-13 18:19:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-13 18:19:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-13 18:19:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2022-07-13 18:19:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2022-07-13 18:19:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2022-07-13 18:19:06,026 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2022-07-13 18:19:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2022-07-13 18:19:06,026 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2022-07-13 18:19:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:19:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:19:06,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:19:06,127 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:19:06,129 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:19:06,469 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:19:06,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:19:06,474 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 18:19:06,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:19:06 BoogieIcfgContainer [2022-07-13 18:19:06,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:19:06,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:19:06,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:19:06,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:19:06,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:19:05" (1/3) ... [2022-07-13 18:19:06,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1683dea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:19:06, skipping insertion in model container [2022-07-13 18:19:06,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:19:05" (2/3) ... [2022-07-13 18:19:06,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1683dea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:19:06, skipping insertion in model container [2022-07-13 18:19:06,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:19:06" (3/3) ... [2022-07-13 18:19:06,481 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2022-07-13 18:19:06,490 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:19:06,490 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:19:06,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:19:06,544 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@76d52583, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37713463 [2022-07-13 18:19:06,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:19:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 150 states have internal predecessors, (235), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-13 18:19:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 18:19:06,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:06,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:06,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash 373059156, now seen corresponding path program 1 times [2022-07-13 18:19:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:06,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519001204] [2022-07-13 18:19:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:06,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:06,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:06,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519001204] [2022-07-13 18:19:06,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519001204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:06,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:06,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:06,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932115000] [2022-07-13 18:19:06,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:06,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:06,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:06,760 INFO L87 Difference]: Start difference. First operand has 185 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 150 states have internal predecessors, (235), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:06,868 INFO L93 Difference]: Finished difference Result 375 states and 641 transitions. [2022-07-13 18:19:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-13 18:19:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:06,880 INFO L225 Difference]: With dead ends: 375 [2022-07-13 18:19:06,881 INFO L226 Difference]: Without dead ends: 189 [2022-07-13 18:19:06,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:06,891 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 18 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:06,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 832 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-13 18:19:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2022-07-13 18:19:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 148 states have (on average 1.5337837837837838) internal successors, (227), 151 states have internal predecessors, (227), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-13 18:19:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 291 transitions. [2022-07-13 18:19:06,968 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 291 transitions. Word has length 15 [2022-07-13 18:19:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:06,968 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 291 transitions. [2022-07-13 18:19:06,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 291 transitions. [2022-07-13 18:19:06,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 18:19:06,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:06,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:06,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:19:06,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1034031296, now seen corresponding path program 1 times [2022-07-13 18:19:06,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:06,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664399613] [2022-07-13 18:19:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:07,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664399613] [2022-07-13 18:19:07,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664399613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:07,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:07,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:07,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598107640] [2022-07-13 18:19:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:07,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:07,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:07,042 INFO L87 Difference]: Start difference. First operand 187 states and 291 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:07,087 INFO L93 Difference]: Finished difference Result 387 states and 605 transitions. [2022-07-13 18:19:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:07,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 18:19:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:07,090 INFO L225 Difference]: With dead ends: 387 [2022-07-13 18:19:07,090 INFO L226 Difference]: Without dead ends: 203 [2022-07-13 18:19:07,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:07,094 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 25 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:07,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:07,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-13 18:19:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2022-07-13 18:19:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.5157232704402517) internal successors, (241), 162 states have internal predecessors, (241), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 307 transitions. [2022-07-13 18:19:07,112 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 307 transitions. Word has length 16 [2022-07-13 18:19:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:07,113 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 307 transitions. [2022-07-13 18:19:07,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:19:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 307 transitions. [2022-07-13 18:19:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 18:19:07,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:07,123 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] [2022-07-13 18:19:07,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:19:07,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1490256581, now seen corresponding path program 1 times [2022-07-13 18:19:07,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:07,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663907262] [2022-07-13 18:19:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:07,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663907262] [2022-07-13 18:19:07,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663907262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:07,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:07,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:19:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101672479] [2022-07-13 18:19:07,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:19:07,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:19:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:19:07,183 INFO L87 Difference]: Start difference. First operand 200 states and 307 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:19:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:07,205 INFO L93 Difference]: Finished difference Result 419 states and 651 transitions. [2022-07-13 18:19:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:19:07,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-13 18:19:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:07,209 INFO L225 Difference]: With dead ends: 419 [2022-07-13 18:19:07,209 INFO L226 Difference]: Without dead ends: 229 [2022-07-13 18:19:07,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:19:07,215 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 22 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:07,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 568 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:07,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-13 18:19:07,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 202. [2022-07-13 18:19:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.5093167701863355) internal successors, (243), 164 states have internal predecessors, (243), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 309 transitions. [2022-07-13 18:19:07,246 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 309 transitions. Word has length 23 [2022-07-13 18:19:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:07,247 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 309 transitions. [2022-07-13 18:19:07,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 18:19:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 309 transitions. [2022-07-13 18:19:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 18:19:07,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:07,249 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] [2022-07-13 18:19:07,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:19:07,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:07,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1716180554, now seen corresponding path program 1 times [2022-07-13 18:19:07,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:07,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299496247] [2022-07-13 18:19:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299496247] [2022-07-13 18:19:07,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299496247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:07,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:07,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26000113] [2022-07-13 18:19:07,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:07,332 INFO L87 Difference]: Start difference. First operand 202 states and 309 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:07,369 INFO L93 Difference]: Finished difference Result 460 states and 720 transitions. [2022-07-13 18:19:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2022-07-13 18:19:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:07,371 INFO L225 Difference]: With dead ends: 460 [2022-07-13 18:19:07,371 INFO L226 Difference]: Without dead ends: 309 [2022-07-13 18:19:07,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:07,372 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 134 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:07,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 876 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-13 18:19:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 202. [2022-07-13 18:19:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.484472049689441) internal successors, (239), 164 states have internal predecessors, (239), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2022-07-13 18:19:07,382 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 31 [2022-07-13 18:19:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:07,382 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2022-07-13 18:19:07,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2022-07-13 18:19:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 18:19:07,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:07,384 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:19:07,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:19:07,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash -590315317, now seen corresponding path program 1 times [2022-07-13 18:19:07,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:07,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239909930] [2022-07-13 18:19:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:07,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239909930] [2022-07-13 18:19:07,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239909930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:07,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:07,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:07,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672115984] [2022-07-13 18:19:07,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:07,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:07,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:07,425 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:07,445 INFO L93 Difference]: Finished difference Result 394 states and 599 transitions. [2022-07-13 18:19:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:07,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-13 18:19:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:07,447 INFO L225 Difference]: With dead ends: 394 [2022-07-13 18:19:07,447 INFO L226 Difference]: Without dead ends: 204 [2022-07-13 18:19:07,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:07,448 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1108 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 [2022-07-13 18:19:07,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1108 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-13 18:19:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2022-07-13 18:19:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.4782608695652173) internal successors, (238), 164 states have internal predecessors, (238), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-13 18:19:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2022-07-13 18:19:07,455 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 32 [2022-07-13 18:19:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:07,456 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2022-07-13 18:19:07,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2022-07-13 18:19:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 18:19:07,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:07,457 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 18:19:07,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:19:07,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1085391716, now seen corresponding path program 1 times [2022-07-13 18:19:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:07,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106750992] [2022-07-13 18:19:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106750992] [2022-07-13 18:19:07,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106750992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:07,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105952324] [2022-07-13 18:19:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:07,493 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) [2022-07-13 18:19:07,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:19:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 18:19:07,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:07,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:19:07,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105952324] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:07,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:07,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-13 18:19:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595627803] [2022-07-13 18:19:07,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:07,661 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:19:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:07,688 INFO L93 Difference]: Finished difference Result 452 states and 695 transitions. [2022-07-13 18:19:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-13 18:19:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:07,690 INFO L225 Difference]: With dead ends: 452 [2022-07-13 18:19:07,690 INFO L226 Difference]: Without dead ends: 261 [2022-07-13 18:19:07,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:07,692 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 66 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:07,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1095 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-13 18:19:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2022-07-13 18:19:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 204 states have (on average 1.4558823529411764) internal successors, (297), 207 states have internal predecessors, (297), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 18:19:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 383 transitions. [2022-07-13 18:19:07,700 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 383 transitions. Word has length 35 [2022-07-13 18:19:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:07,700 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 383 transitions. [2022-07-13 18:19:07,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 18:19:07,700 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 383 transitions. [2022-07-13 18:19:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:19:07,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:07,701 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:07,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:07,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 18:19:07,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1975524508, now seen corresponding path program 2 times [2022-07-13 18:19:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783628901] [2022-07-13 18:19:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 18:19:07,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:07,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783628901] [2022-07-13 18:19:07,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783628901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:07,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:07,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:07,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124298117] [2022-07-13 18:19:07,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:07,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:07,960 INFO L87 Difference]: Start difference. First operand 255 states and 383 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:07,990 INFO L93 Difference]: Finished difference Result 490 states and 756 transitions. [2022-07-13 18:19:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:07,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-13 18:19:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:07,992 INFO L225 Difference]: With dead ends: 490 [2022-07-13 18:19:07,993 INFO L226 Difference]: Without dead ends: 264 [2022-07-13 18:19:07,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:07,994 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 19 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:07,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 819 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-13 18:19:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2022-07-13 18:19:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 210 states have (on average 1.4523809523809523) internal successors, (305), 213 states have internal predecessors, (305), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 18:19:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 391 transitions. [2022-07-13 18:19:08,002 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 391 transitions. Word has length 57 [2022-07-13 18:19:08,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,003 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 391 transitions. [2022-07-13 18:19:08,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 391 transitions. [2022-07-13 18:19:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 18:19:08,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,004 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:19:08,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash -64672629, now seen corresponding path program 1 times [2022-07-13 18:19:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349297170] [2022-07-13 18:19:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 18:19:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349297170] [2022-07-13 18:19:08,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349297170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578719510] [2022-07-13 18:19:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:08,052 INFO L87 Difference]: Start difference. First operand 262 states and 391 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,079 INFO L93 Difference]: Finished difference Result 534 states and 808 transitions. [2022-07-13 18:19:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-13 18:19:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,081 INFO L225 Difference]: With dead ends: 534 [2022-07-13 18:19:08,081 INFO L226 Difference]: Without dead ends: 301 [2022-07-13 18:19:08,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,082 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 24 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 833 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-13 18:19:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2022-07-13 18:19:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 242 states have (on average 1.4132231404958677) internal successors, (342), 245 states have internal predecessors, (342), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 18:19:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 434 transitions. [2022-07-13 18:19:08,101 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 434 transitions. Word has length 57 [2022-07-13 18:19:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,102 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 434 transitions. [2022-07-13 18:19:08,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 18:19:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 434 transitions. [2022-07-13 18:19:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:19:08,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,103 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:19:08,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 519762270, now seen corresponding path program 1 times [2022-07-13 18:19:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459212352] [2022-07-13 18:19:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 18:19:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459212352] [2022-07-13 18:19:08,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459212352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:08,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978148182] [2022-07-13 18:19:08,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:08,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:08,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,155 INFO L87 Difference]: Start difference. First operand 298 states and 434 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,172 INFO L93 Difference]: Finished difference Result 545 states and 807 transitions. [2022-07-13 18:19:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-07-13 18:19:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,174 INFO L225 Difference]: With dead ends: 545 [2022-07-13 18:19:08,174 INFO L226 Difference]: Without dead ends: 300 [2022-07-13 18:19:08,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,176 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1108 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-13 18:19:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-07-13 18:19:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 242 states have (on average 1.4008264462809918) internal successors, (339), 245 states have internal predecessors, (339), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-13 18:19:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 431 transitions. [2022-07-13 18:19:08,183 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 431 transitions. Word has length 75 [2022-07-13 18:19:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,184 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 431 transitions. [2022-07-13 18:19:08,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 431 transitions. [2022-07-13 18:19:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 18:19:08,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,185 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:19:08,185 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash 532920743, now seen corresponding path program 1 times [2022-07-13 18:19:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971240718] [2022-07-13 18:19:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-13 18:19:08,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971240718] [2022-07-13 18:19:08,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971240718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:08,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710531562] [2022-07-13 18:19:08,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:08,233 INFO L87 Difference]: Start difference. First operand 298 states and 431 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,262 INFO L93 Difference]: Finished difference Result 582 states and 863 transitions. [2022-07-13 18:19:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:08,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2022-07-13 18:19:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,264 INFO L225 Difference]: With dead ends: 582 [2022-07-13 18:19:08,264 INFO L226 Difference]: Without dead ends: 342 [2022-07-13 18:19:08,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,265 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 25 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 833 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-13 18:19:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2022-07-13 18:19:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 279 states have (on average 1.3655913978494623) internal successors, (381), 282 states have internal predecessors, (381), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-13 18:19:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 479 transitions. [2022-07-13 18:19:08,273 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 479 transitions. Word has length 104 [2022-07-13 18:19:08,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,273 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 479 transitions. [2022-07-13 18:19:08,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:08,273 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 479 transitions. [2022-07-13 18:19:08,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:19:08,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,274 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:19:08,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1654716533, now seen corresponding path program 1 times [2022-07-13 18:19:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750841312] [2022-07-13 18:19:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-13 18:19:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750841312] [2022-07-13 18:19:08,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750841312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:08,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283444614] [2022-07-13 18:19:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:08,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:08,326 INFO L87 Difference]: Start difference. First operand 339 states and 479 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,353 INFO L93 Difference]: Finished difference Result 608 states and 883 transitions. [2022-07-13 18:19:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2022-07-13 18:19:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,355 INFO L225 Difference]: With dead ends: 608 [2022-07-13 18:19:08,355 INFO L226 Difference]: Without dead ends: 333 [2022-07-13 18:19:08,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,356 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 15 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 792 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-13 18:19:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-07-13 18:19:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 274 states have (on average 1.3467153284671534) internal successors, (369), 277 states have internal predecessors, (369), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-13 18:19:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 465 transitions. [2022-07-13 18:19:08,363 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 465 transitions. Word has length 105 [2022-07-13 18:19:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,364 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 465 transitions. [2022-07-13 18:19:08,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-13 18:19:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 465 transitions. [2022-07-13 18:19:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 18:19:08,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,365 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 18:19:08,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:19:08,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1120089015, now seen corresponding path program 1 times [2022-07-13 18:19:08,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891997881] [2022-07-13 18:19:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-13 18:19:08,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891997881] [2022-07-13 18:19:08,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891997881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92866784] [2022-07-13 18:19:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,421 INFO L87 Difference]: Start difference. First operand 333 states and 465 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,438 INFO L93 Difference]: Finished difference Result 583 states and 832 transitions. [2022-07-13 18:19:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:08,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2022-07-13 18:19:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,441 INFO L225 Difference]: With dead ends: 583 [2022-07-13 18:19:08,441 INFO L226 Difference]: Without dead ends: 335 [2022-07-13 18:19:08,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,442 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1093 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-13 18:19:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2022-07-13 18:19:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 274 states have (on average 1.3357664233576643) internal successors, (366), 277 states have internal predecessors, (366), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-13 18:19:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 462 transitions. [2022-07-13 18:19:08,450 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 462 transitions. Word has length 124 [2022-07-13 18:19:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,450 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 462 transitions. [2022-07-13 18:19:08,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 462 transitions. [2022-07-13 18:19:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 18:19:08,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,452 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:19:08,452 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,452 INFO L85 PathProgramCache]: Analyzing trace with hash -939930564, now seen corresponding path program 1 times [2022-07-13 18:19:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997659591] [2022-07-13 18:19:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-13 18:19:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997659591] [2022-07-13 18:19:08,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997659591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:08,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773236109] [2022-07-13 18:19:08,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:08,525 INFO L87 Difference]: Start difference. First operand 333 states and 462 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,561 INFO L93 Difference]: Finished difference Result 546 states and 792 transitions. [2022-07-13 18:19:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:08,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2022-07-13 18:19:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,563 INFO L225 Difference]: With dead ends: 546 [2022-07-13 18:19:08,564 INFO L226 Difference]: Without dead ends: 331 [2022-07-13 18:19:08,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,565 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 760 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-13 18:19:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-07-13 18:19:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 273 states have (on average 1.3333333333333333) internal successors, (364), 276 states have internal predecessors, (364), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-13 18:19:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2022-07-13 18:19:08,573 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 157 [2022-07-13 18:19:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,574 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2022-07-13 18:19:08,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 18:19:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2022-07-13 18:19:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 18:19:08,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,576 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:19:08,576 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1043007713, now seen corresponding path program 1 times [2022-07-13 18:19:08,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607857129] [2022-07-13 18:19:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-07-13 18:19:08,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607857129] [2022-07-13 18:19:08,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607857129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7235808] [2022-07-13 18:19:08,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:08,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:08,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:08,638 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,670 INFO L93 Difference]: Finished difference Result 486 states and 688 transitions. [2022-07-13 18:19:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:08,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 172 [2022-07-13 18:19:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,672 INFO L225 Difference]: With dead ends: 486 [2022-07-13 18:19:08,672 INFO L226 Difference]: Without dead ends: 314 [2022-07-13 18:19:08,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,673 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 35 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 741 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-13 18:19:08,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-07-13 18:19:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 259 states have (on average 1.3243243243243243) internal successors, (343), 262 states have internal predecessors, (343), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-13 18:19:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 431 transitions. [2022-07-13 18:19:08,680 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 431 transitions. Word has length 172 [2022-07-13 18:19:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,680 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 431 transitions. [2022-07-13 18:19:08,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 431 transitions. [2022-07-13 18:19:08,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-13 18:19:08,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,682 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:19:08,682 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1497862393, now seen corresponding path program 1 times [2022-07-13 18:19:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479099612] [2022-07-13 18:19:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-13 18:19:08,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479099612] [2022-07-13 18:19:08,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479099612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:08,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085997261] [2022-07-13 18:19:08,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:08,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:08,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:08,754 INFO L87 Difference]: Start difference. First operand 314 states and 431 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,786 INFO L93 Difference]: Finished difference Result 469 states and 661 transitions. [2022-07-13 18:19:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:08,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 174 [2022-07-13 18:19:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,788 INFO L225 Difference]: With dead ends: 469 [2022-07-13 18:19:08,788 INFO L226 Difference]: Without dead ends: 295 [2022-07-13 18:19:08,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,789 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 30 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 745 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-13 18:19:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-07-13 18:19:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 243 states have (on average 1.316872427983539) internal successors, (320), 246 states have internal predecessors, (320), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-13 18:19:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 402 transitions. [2022-07-13 18:19:08,795 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 402 transitions. Word has length 174 [2022-07-13 18:19:08,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,795 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 402 transitions. [2022-07-13 18:19:08,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 18:19:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 402 transitions. [2022-07-13 18:19:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 18:19:08,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,797 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:19:08,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1367013378, now seen corresponding path program 1 times [2022-07-13 18:19:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981599218] [2022-07-13 18:19:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-13 18:19:08,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981599218] [2022-07-13 18:19:08,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981599218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:08,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:08,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:08,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317163435] [2022-07-13 18:19:08,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:08,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:08,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:08,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:08,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,856 INFO L87 Difference]: Start difference. First operand 295 states and 402 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:08,869 INFO L93 Difference]: Finished difference Result 449 states and 631 transitions. [2022-07-13 18:19:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:08,869 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), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 175 [2022-07-13 18:19:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:08,870 INFO L225 Difference]: With dead ends: 449 [2022-07-13 18:19:08,870 INFO L226 Difference]: Without dead ends: 295 [2022-07-13 18:19:08,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:08,871 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:08,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1072 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-13 18:19:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-07-13 18:19:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 243 states have (on average 1.2921810699588476) internal successors, (314), 246 states have internal predecessors, (314), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-13 18:19:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 396 transitions. [2022-07-13 18:19:08,877 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 396 transitions. Word has length 175 [2022-07-13 18:19:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:08,878 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 396 transitions. [2022-07-13 18:19:08,878 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), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 396 transitions. [2022-07-13 18:19:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-13 18:19:08,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:08,879 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:08,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:19:08,879 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -987087320, now seen corresponding path program 1 times [2022-07-13 18:19:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:08,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775584183] [2022-07-13 18:19:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-13 18:19:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:08,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775584183] [2022-07-13 18:19:08,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775584183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:08,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017573605] [2022-07-13 18:19:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:08,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:08,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:08,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:08,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 18:19:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:09,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-13 18:19:09,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-13 18:19:09,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017573605] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:09,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 18:19:09,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2022-07-13 18:19:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578711887] [2022-07-13 18:19:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:09,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:09,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:09,182 INFO L87 Difference]: Start difference. First operand 295 states and 396 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:19:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:09,207 INFO L93 Difference]: Finished difference Result 470 states and 653 transitions. [2022-07-13 18:19:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 182 [2022-07-13 18:19:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:09,209 INFO L225 Difference]: With dead ends: 470 [2022-07-13 18:19:09,209 INFO L226 Difference]: Without dead ends: 274 [2022-07-13 18:19:09,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:09,210 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 35 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:09,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 509 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-13 18:19:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-07-13 18:19:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 225 states have (on average 1.2844444444444445) internal successors, (289), 228 states have internal predecessors, (289), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 18:19:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2022-07-13 18:19:09,216 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 182 [2022-07-13 18:19:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:09,216 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2022-07-13 18:19:09,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 18:19:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2022-07-13 18:19:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-13 18:19:09,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:09,218 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:09,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:09,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 18:19:09,436 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -140991269, now seen corresponding path program 1 times [2022-07-13 18:19:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:09,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87861488] [2022-07-13 18:19:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:09,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-13 18:19:09,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87861488] [2022-07-13 18:19:09,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87861488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:09,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:09,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:09,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480033983] [2022-07-13 18:19:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:09,492 INFO L87 Difference]: Start difference. First operand 274 states and 365 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:09,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:09,509 INFO L93 Difference]: Finished difference Result 427 states and 595 transitions. [2022-07-13 18:19:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:09,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 206 [2022-07-13 18:19:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:09,511 INFO L225 Difference]: With dead ends: 427 [2022-07-13 18:19:09,511 INFO L226 Difference]: Without dead ends: 280 [2022-07-13 18:19:09,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:09,511 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 6 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:09,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 785 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-13 18:19:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2022-07-13 18:19:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 228 states have (on average 1.280701754385965) internal successors, (292), 231 states have internal predecessors, (292), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 18:19:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 368 transitions. [2022-07-13 18:19:09,517 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 368 transitions. Word has length 206 [2022-07-13 18:19:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:09,518 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 368 transitions. [2022-07-13 18:19:09,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-13 18:19:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 368 transitions. [2022-07-13 18:19:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-13 18:19:09,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:09,519 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:19:09,520 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:09,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1871832371, now seen corresponding path program 1 times [2022-07-13 18:19:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:09,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933401178] [2022-07-13 18:19:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-13 18:19:09,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:09,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933401178] [2022-07-13 18:19:09,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933401178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:09,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818982738] [2022-07-13 18:19:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:09,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:09,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:09,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:09,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 18:19:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:09,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:09,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-13 18:19:09,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:09,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818982738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:09,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:09,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368894623] [2022-07-13 18:19:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:09,729 INFO L87 Difference]: Start difference. First operand 278 states and 368 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 18:19:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:09,748 INFO L93 Difference]: Finished difference Result 436 states and 602 transitions. [2022-07-13 18:19:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 215 [2022-07-13 18:19:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:09,749 INFO L225 Difference]: With dead ends: 436 [2022-07-13 18:19:09,750 INFO L226 Difference]: Without dead ends: 285 [2022-07-13 18:19:09,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:09,750 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 7 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:09,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 790 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-13 18:19:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2022-07-13 18:19:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 232 states have (on average 1.2758620689655173) internal successors, (296), 235 states have internal predecessors, (296), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 18:19:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 372 transitions. [2022-07-13 18:19:09,756 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 372 transitions. Word has length 215 [2022-07-13 18:19:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:09,757 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 372 transitions. [2022-07-13 18:19:09,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 18:19:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 372 transitions. [2022-07-13 18:19:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-13 18:19:09,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:09,759 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:09,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:09,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:09,977 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1464887465, now seen corresponding path program 1 times [2022-07-13 18:19:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:09,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236961667] [2022-07-13 18:19:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-13 18:19:10,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:10,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236961667] [2022-07-13 18:19:10,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236961667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:10,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183198220] [2022-07-13 18:19:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:10,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:10,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:10,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 18:19:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:10,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-13 18:19:10,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:10,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183198220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:10,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:10,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:10,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695078420] [2022-07-13 18:19:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:10,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:10,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:10,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:10,232 INFO L87 Difference]: Start difference. First operand 283 states and 372 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-13 18:19:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:10,255 INFO L93 Difference]: Finished difference Result 438 states and 600 transitions. [2022-07-13 18:19:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:10,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 225 [2022-07-13 18:19:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:10,258 INFO L225 Difference]: With dead ends: 438 [2022-07-13 18:19:10,258 INFO L226 Difference]: Without dead ends: 282 [2022-07-13 18:19:10,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:10,259 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 7 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:10,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 776 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-13 18:19:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-07-13 18:19:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 232 states have (on average 1.2629310344827587) internal successors, (293), 234 states have internal predecessors, (293), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 18:19:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 367 transitions. [2022-07-13 18:19:10,269 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 367 transitions. Word has length 225 [2022-07-13 18:19:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:10,270 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 367 transitions. [2022-07-13 18:19:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-13 18:19:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 367 transitions. [2022-07-13 18:19:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-13 18:19:10,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:10,272 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:10,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 18:19:10,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:10,507 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:10,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash 147339615, now seen corresponding path program 1 times [2022-07-13 18:19:10,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:10,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000176785] [2022-07-13 18:19:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:10,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-13 18:19:10,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:10,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000176785] [2022-07-13 18:19:10,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000176785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:10,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:10,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:10,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373695313] [2022-07-13 18:19:10,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:10,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:10,597 INFO L87 Difference]: Start difference. First operand 282 states and 367 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-13 18:19:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:10,745 INFO L93 Difference]: Finished difference Result 481 states and 662 transitions. [2022-07-13 18:19:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:10,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 235 [2022-07-13 18:19:10,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:10,747 INFO L225 Difference]: With dead ends: 481 [2022-07-13 18:19:10,747 INFO L226 Difference]: Without dead ends: 326 [2022-07-13 18:19:10,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:10,748 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 187 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:10,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 644 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:19:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-13 18:19:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2022-07-13 18:19:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 232 states have (on average 1.2586206896551724) internal successors, (292), 233 states have internal predecessors, (292), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 18:19:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 364 transitions. [2022-07-13 18:19:10,755 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 364 transitions. Word has length 235 [2022-07-13 18:19:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:10,756 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 364 transitions. [2022-07-13 18:19:10,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-13 18:19:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 364 transitions. [2022-07-13 18:19:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-13 18:19:10,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:10,758 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:10,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 18:19:10,758 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:10,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:10,758 INFO L85 PathProgramCache]: Analyzing trace with hash -459103186, now seen corresponding path program 1 times [2022-07-13 18:19:10,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:10,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607337735] [2022-07-13 18:19:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:10,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-13 18:19:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:10,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607337735] [2022-07-13 18:19:10,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607337735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:10,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:10,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:10,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663084899] [2022-07-13 18:19:10,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:10,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:10,857 INFO L87 Difference]: Start difference. First operand 281 states and 364 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 18:19:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:11,243 INFO L93 Difference]: Finished difference Result 659 states and 882 transitions. [2022-07-13 18:19:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:19:11,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 237 [2022-07-13 18:19:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:11,245 INFO L225 Difference]: With dead ends: 659 [2022-07-13 18:19:11,246 INFO L226 Difference]: Without dead ends: 505 [2022-07-13 18:19:11,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:19:11,246 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 423 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 794 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-07-13 18:19:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 442. [2022-07-13 18:19:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 363 states have (on average 1.303030303030303) internal successors, (473), 365 states have internal predecessors, (473), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-13 18:19:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 581 transitions. [2022-07-13 18:19:11,259 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 581 transitions. Word has length 237 [2022-07-13 18:19:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:11,259 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 581 transitions. [2022-07-13 18:19:11,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 18:19:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 581 transitions. [2022-07-13 18:19:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-13 18:19:11,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:11,261 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:11,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 18:19:11,262 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:11,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1140511748, now seen corresponding path program 1 times [2022-07-13 18:19:11,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:11,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071215099] [2022-07-13 18:19:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-13 18:19:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-13 18:19:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-13 18:19:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-13 18:19:11,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:11,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071215099] [2022-07-13 18:19:11,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071215099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:11,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:11,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264272522] [2022-07-13 18:19:11,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:11,341 INFO L87 Difference]: Start difference. First operand 442 states and 581 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:11,601 INFO L93 Difference]: Finished difference Result 935 states and 1283 transitions. [2022-07-13 18:19:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 265 [2022-07-13 18:19:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:11,604 INFO L225 Difference]: With dead ends: 935 [2022-07-13 18:19:11,604 INFO L226 Difference]: Without dead ends: 697 [2022-07-13 18:19:11,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:11,605 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 218 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:11,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 598 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-07-13 18:19:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 535. [2022-07-13 18:19:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 446 states have (on average 1.3139013452914798) internal successors, (586), 449 states have internal predecessors, (586), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-13 18:19:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 704 transitions. [2022-07-13 18:19:11,624 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 704 transitions. Word has length 265 [2022-07-13 18:19:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:11,624 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 704 transitions. [2022-07-13 18:19:11,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 704 transitions. [2022-07-13 18:19:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-13 18:19:11,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:11,626 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:11,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 18:19:11,626 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:11,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash -324333967, now seen corresponding path program 1 times [2022-07-13 18:19:11,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:11,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702390429] [2022-07-13 18:19:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-13 18:19:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-13 18:19:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-13 18:19:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-13 18:19:11,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:11,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702390429] [2022-07-13 18:19:11,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702390429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:11,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:11,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972865498] [2022-07-13 18:19:11,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:11,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:11,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:11,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:11,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:11,710 INFO L87 Difference]: Start difference. First operand 535 states and 704 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:11,962 INFO L93 Difference]: Finished difference Result 1133 states and 1548 transitions. [2022-07-13 18:19:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:11,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 266 [2022-07-13 18:19:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:11,966 INFO L225 Difference]: With dead ends: 1133 [2022-07-13 18:19:11,966 INFO L226 Difference]: Without dead ends: 837 [2022-07-13 18:19:11,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:11,967 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 221 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:11,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 632 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-07-13 18:19:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 659. [2022-07-13 18:19:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 558 states have (on average 1.3261648745519714) internal successors, (740), 563 states have internal predecessors, (740), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-13 18:19:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 870 transitions. [2022-07-13 18:19:11,989 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 870 transitions. Word has length 266 [2022-07-13 18:19:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:11,989 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 870 transitions. [2022-07-13 18:19:11,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 18:19:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 870 transitions. [2022-07-13 18:19:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-13 18:19:11,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:11,992 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 18:19:11,992 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1407639519, now seen corresponding path program 1 times [2022-07-13 18:19:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:11,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767421878] [2022-07-13 18:19:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-13 18:19:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-13 18:19:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2022-07-13 18:19:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:12,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767421878] [2022-07-13 18:19:12,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767421878] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:12,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582695970] [2022-07-13 18:19:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:12,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:12,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:12,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:12,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 18:19:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 18:19:12,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-13 18:19:12,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:12,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582695970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:12,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:12,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 18:19:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281038875] [2022-07-13 18:19:12,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:12,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:12,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:12,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:19:12,264 INFO L87 Difference]: Start difference. First operand 659 states and 870 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:12,333 INFO L93 Difference]: Finished difference Result 1053 states and 1426 transitions. [2022-07-13 18:19:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 267 [2022-07-13 18:19:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:12,336 INFO L225 Difference]: With dead ends: 1053 [2022-07-13 18:19:12,336 INFO L226 Difference]: Without dead ends: 659 [2022-07-13 18:19:12,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:19:12,337 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 51 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:12,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 693 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-13 18:19:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-13 18:19:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 558 states have (on average 1.3154121863799284) internal successors, (734), 563 states have internal predecessors, (734), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-13 18:19:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 864 transitions. [2022-07-13 18:19:12,361 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 864 transitions. Word has length 267 [2022-07-13 18:19:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:12,361 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 864 transitions. [2022-07-13 18:19:12,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 864 transitions. [2022-07-13 18:19:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-13 18:19:12,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:12,364 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:12,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:12,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-13 18:19:12,584 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:12,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:12,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1853291600, now seen corresponding path program 1 times [2022-07-13 18:19:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:12,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861201402] [2022-07-13 18:19:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-13 18:19:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2022-07-13 18:19:12,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:12,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861201402] [2022-07-13 18:19:12,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861201402] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:12,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879171991] [2022-07-13 18:19:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:12,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:12,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:12,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:12,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 18:19:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:12,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 18:19:12,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-13 18:19:12,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:12,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879171991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:12,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:12,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 18:19:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747358672] [2022-07-13 18:19:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:19:12,869 INFO L87 Difference]: Start difference. First operand 659 states and 864 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:12,960 INFO L93 Difference]: Finished difference Result 1053 states and 1412 transitions. [2022-07-13 18:19:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:12,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 268 [2022-07-13 18:19:12,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:12,963 INFO L225 Difference]: With dead ends: 1053 [2022-07-13 18:19:12,963 INFO L226 Difference]: Without dead ends: 671 [2022-07-13 18:19:12,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:19:12,964 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 15 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:12,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 716 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-13 18:19:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2022-07-13 18:19:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 568 states have (on average 1.3169014084507042) internal successors, (748), 573 states have internal predecessors, (748), 65 states have call successors, (65), 37 states have call predecessors, (65), 37 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-13 18:19:12,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 878 transitions. [2022-07-13 18:19:12,987 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 878 transitions. Word has length 268 [2022-07-13 18:19:12,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:12,987 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 878 transitions. [2022-07-13 18:19:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 18:19:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 878 transitions. [2022-07-13 18:19:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-13 18:19:12,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:12,988 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:13,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:13,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 18:19:13,207 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1384676539, now seen corresponding path program 1 times [2022-07-13 18:19:13,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:13,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545243373] [2022-07-13 18:19:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:13,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-13 18:19:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:13,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545243373] [2022-07-13 18:19:13,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545243373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:13,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:13,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:19:13,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816031638] [2022-07-13 18:19:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:19:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:13,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:19:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:19:13,329 INFO L87 Difference]: Start difference. First operand 671 states and 878 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 18:19:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:13,670 INFO L93 Difference]: Finished difference Result 947 states and 1309 transitions. [2022-07-13 18:19:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:19:13,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 269 [2022-07-13 18:19:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:13,673 INFO L225 Difference]: With dead ends: 947 [2022-07-13 18:19:13,673 INFO L226 Difference]: Without dead ends: 945 [2022-07-13 18:19:13,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:19:13,674 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 264 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:13,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1683 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-07-13 18:19:13,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 677. [2022-07-13 18:19:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 572 states have (on average 1.3146853146853146) internal successors, (752), 578 states have internal predecessors, (752), 66 states have call successors, (66), 38 states have call predecessors, (66), 38 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2022-07-13 18:19:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 884 transitions. [2022-07-13 18:19:13,699 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 884 transitions. Word has length 269 [2022-07-13 18:19:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:13,700 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 884 transitions. [2022-07-13 18:19:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 18:19:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 884 transitions. [2022-07-13 18:19:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-13 18:19:13,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:13,701 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:13,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 18:19:13,702 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1259990170, now seen corresponding path program 1 times [2022-07-13 18:19:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:13,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586429009] [2022-07-13 18:19:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-13 18:19:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-13 18:19:13,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:13,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586429009] [2022-07-13 18:19:13,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586429009] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:13,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253451106] [2022-07-13 18:19:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:13,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:13,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:13,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:13,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 18:19:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:14,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 18:19:14,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-13 18:19:14,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-13 18:19:14,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253451106] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:14,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:14,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-07-13 18:19:14,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055880828] [2022-07-13 18:19:14,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:14,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 18:19:14,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 18:19:14,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-13 18:19:14,334 INFO L87 Difference]: Start difference. First operand 677 states and 884 transitions. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-13 18:19:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:15,968 INFO L93 Difference]: Finished difference Result 1937 states and 2719 transitions. [2022-07-13 18:19:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 18:19:15,969 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 277 [2022-07-13 18:19:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:15,974 INFO L225 Difference]: With dead ends: 1937 [2022-07-13 18:19:15,974 INFO L226 Difference]: Without dead ends: 1537 [2022-07-13 18:19:15,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 18:19:15,976 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 767 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:15,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2886 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:19:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-07-13 18:19:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 948. [2022-07-13 18:19:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 803 states have (on average 1.3088418430884183) internal successors, (1051), 810 states have internal predecessors, (1051), 90 states have call successors, (90), 51 states have call predecessors, (90), 54 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2022-07-13 18:19:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1236 transitions. [2022-07-13 18:19:16,052 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1236 transitions. Word has length 277 [2022-07-13 18:19:16,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:16,052 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1236 transitions. [2022-07-13 18:19:16,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-13 18:19:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1236 transitions. [2022-07-13 18:19:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-13 18:19:16,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:16,054 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:16,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:16,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:16,268 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:16,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2073363109, now seen corresponding path program 1 times [2022-07-13 18:19:16,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:16,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821142612] [2022-07-13 18:19:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:16,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-13 18:19:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2022-07-13 18:19:16,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:16,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821142612] [2022-07-13 18:19:16,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821142612] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:16,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908957388] [2022-07-13 18:19:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:16,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:16,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:16,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 18:19:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:16,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-13 18:19:16,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:16,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908957388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:16,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:16,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779848225] [2022-07-13 18:19:16,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:16,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:16,531 INFO L87 Difference]: Start difference. First operand 948 states and 1236 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 18:19:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:16,587 INFO L93 Difference]: Finished difference Result 1759 states and 2336 transitions. [2022-07-13 18:19:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:16,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 277 [2022-07-13 18:19:16,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:16,591 INFO L225 Difference]: With dead ends: 1759 [2022-07-13 18:19:16,591 INFO L226 Difference]: Without dead ends: 932 [2022-07-13 18:19:16,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:16,593 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 11 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:16,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 716 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-07-13 18:19:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2022-07-13 18:19:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 792 states have (on average 1.2967171717171717) internal successors, (1027), 799 states have internal predecessors, (1027), 86 states have call successors, (86), 51 states have call predecessors, (86), 53 states have return successors, (90), 85 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-13 18:19:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1203 transitions. [2022-07-13 18:19:16,622 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1203 transitions. Word has length 277 [2022-07-13 18:19:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:16,623 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1203 transitions. [2022-07-13 18:19:16,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 18:19:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1203 transitions. [2022-07-13 18:19:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-13 18:19:16,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:16,625 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:16,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:16,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 18:19:16,843 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1844923738, now seen corresponding path program 1 times [2022-07-13 18:19:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:16,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453460588] [2022-07-13 18:19:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 18:19:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 18:19:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:19:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-13 18:19:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-13 18:19:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 18:19:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-13 18:19:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:19:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:19:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-07-13 18:19:16,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:16,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453460588] [2022-07-13 18:19:16,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453460588] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:16,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987852150] [2022-07-13 18:19:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:16,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:16,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:16,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:16,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 18:19:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:17,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-07-13 18:19:17,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:17,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987852150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:17,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:17,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832070919] [2022-07-13 18:19:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:17,089 INFO L87 Difference]: Start difference. First operand 932 states and 1203 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 18:19:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:17,146 INFO L93 Difference]: Finished difference Result 1592 states and 2097 transitions. [2022-07-13 18:19:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 280 [2022-07-13 18:19:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:17,149 INFO L225 Difference]: With dead ends: 1592 [2022-07-13 18:19:17,149 INFO L226 Difference]: Without dead ends: 772 [2022-07-13 18:19:17,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:17,151 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 8 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:17,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 719 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:19:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-07-13 18:19:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2022-07-13 18:19:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 650 states have (on average 1.2938461538461539) internal successors, (841), 657 states have internal predecessors, (841), 77 states have call successors, (77), 44 states have call predecessors, (77), 44 states have return successors, (77), 74 states have call predecessors, (77), 77 states have call successors, (77) [2022-07-13 18:19:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 995 transitions. [2022-07-13 18:19:17,178 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 995 transitions. Word has length 280 [2022-07-13 18:19:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:17,178 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 995 transitions. [2022-07-13 18:19:17,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 18:19:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 995 transitions. [2022-07-13 18:19:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-13 18:19:17,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:17,181 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:17,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:17,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:17,400 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2138091921, now seen corresponding path program 1 times [2022-07-13 18:19:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665842123] [2022-07-13 18:19:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-13 18:19:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-13 18:19:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-13 18:19:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-07-13 18:19:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:17,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665842123] [2022-07-13 18:19:17,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665842123] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:17,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441563004] [2022-07-13 18:19:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:17,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:17,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:17,715 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:17,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 18:19:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:17,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 18:19:17,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-13 18:19:18,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:18,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441563004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:18,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:18,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2022-07-13 18:19:18,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601269742] [2022-07-13 18:19:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:18,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:19:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:18,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:19:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2022-07-13 18:19:18,010 INFO L87 Difference]: Start difference. First operand 772 states and 995 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 18:19:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:18,265 INFO L93 Difference]: Finished difference Result 1771 states and 2351 transitions. [2022-07-13 18:19:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:19:18,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 292 [2022-07-13 18:19:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:18,270 INFO L225 Difference]: With dead ends: 1771 [2022-07-13 18:19:18,270 INFO L226 Difference]: Without dead ends: 1373 [2022-07-13 18:19:18,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-13 18:19:18,272 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 452 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:18,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 2104 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-07-13 18:19:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1068. [2022-07-13 18:19:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 890 states have (on average 1.2876404494382023) internal successors, (1146), 899 states have internal predecessors, (1146), 118 states have call successors, (118), 59 states have call predecessors, (118), 59 states have return successors, (118), 113 states have call predecessors, (118), 118 states have call successors, (118) [2022-07-13 18:19:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1382 transitions. [2022-07-13 18:19:18,317 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1382 transitions. Word has length 292 [2022-07-13 18:19:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:18,317 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1382 transitions. [2022-07-13 18:19:18,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 18:19:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1382 transitions. [2022-07-13 18:19:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-13 18:19:18,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:18,319 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:18,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:18,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-13 18:19:18,539 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1458819667, now seen corresponding path program 1 times [2022-07-13 18:19:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:18,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711051673] [2022-07-13 18:19:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-13 18:19:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-13 18:19:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-13 18:19:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-07-13 18:19:18,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711051673] [2022-07-13 18:19:18,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711051673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:18,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:18,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:18,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730629765] [2022-07-13 18:19:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:18,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:18,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:18,659 INFO L87 Difference]: Start difference. First operand 1068 states and 1382 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 18:19:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:19,392 INFO L93 Difference]: Finished difference Result 1974 states and 2587 transitions. [2022-07-13 18:19:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:19:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 292 [2022-07-13 18:19:19,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:19,399 INFO L225 Difference]: With dead ends: 1974 [2022-07-13 18:19:19,399 INFO L226 Difference]: Without dead ends: 1280 [2022-07-13 18:19:19,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:19:19,402 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 311 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:19,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 708 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 18:19:19,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-07-13 18:19:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1141. [2022-07-13 18:19:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 945 states have (on average 1.288888888888889) internal successors, (1218), 955 states have internal predecessors, (1218), 131 states have call successors, (131), 64 states have call predecessors, (131), 64 states have return successors, (131), 125 states have call predecessors, (131), 131 states have call successors, (131) [2022-07-13 18:19:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1480 transitions. [2022-07-13 18:19:19,452 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1480 transitions. Word has length 292 [2022-07-13 18:19:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:19,452 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1480 transitions. [2022-07-13 18:19:19,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 18:19:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1480 transitions. [2022-07-13 18:19:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-13 18:19:19,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:19,454 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:19,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 18:19:19,454 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1982946184, now seen corresponding path program 1 times [2022-07-13 18:19:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:19,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491917004] [2022-07-13 18:19:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:19,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:19:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:19:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-13 18:19:19,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:19,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491917004] [2022-07-13 18:19:19,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491917004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:19,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164274228] [2022-07-13 18:19:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:19,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:19,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:19,643 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:19,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 18:19:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:19,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 18:19:19,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-07-13 18:19:19,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:19,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164274228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:19,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:19,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-07-13 18:19:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777550198] [2022-07-13 18:19:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:19:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:19:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:19:19,921 INFO L87 Difference]: Start difference. First operand 1141 states and 1480 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 18:19:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:20,287 INFO L93 Difference]: Finished difference Result 2423 states and 3279 transitions. [2022-07-13 18:19:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:19:20,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 298 [2022-07-13 18:19:20,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:20,294 INFO L225 Difference]: With dead ends: 2423 [2022-07-13 18:19:20,295 INFO L226 Difference]: Without dead ends: 1630 [2022-07-13 18:19:20,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-07-13 18:19:20,297 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 485 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:20,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 2348 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2022-07-13 18:19:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1141. [2022-07-13 18:19:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 945 states have (on average 1.2857142857142858) internal successors, (1215), 955 states have internal predecessors, (1215), 131 states have call successors, (131), 64 states have call predecessors, (131), 64 states have return successors, (131), 125 states have call predecessors, (131), 131 states have call successors, (131) [2022-07-13 18:19:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1477 transitions. [2022-07-13 18:19:20,381 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1477 transitions. Word has length 298 [2022-07-13 18:19:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1477 transitions. [2022-07-13 18:19:20,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 18:19:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1477 transitions. [2022-07-13 18:19:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-13 18:19:20,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:20,384 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:20,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:20,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-13 18:19:20,597 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:20,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1502674486, now seen corresponding path program 1 times [2022-07-13 18:19:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:20,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428683290] [2022-07-13 18:19:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:20,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:19:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:19:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-13 18:19:20,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:20,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428683290] [2022-07-13 18:19:20,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428683290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:20,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:20,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:19:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876652163] [2022-07-13 18:19:20,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:20,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:19:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:19:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:20,731 INFO L87 Difference]: Start difference. First operand 1141 states and 1477 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 18:19:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:21,071 INFO L93 Difference]: Finished difference Result 2836 states and 3892 transitions. [2022-07-13 18:19:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:19:21,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 298 [2022-07-13 18:19:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:21,079 INFO L225 Difference]: With dead ends: 2836 [2022-07-13 18:19:21,079 INFO L226 Difference]: Without dead ends: 2069 [2022-07-13 18:19:21,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:21,081 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 412 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:21,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1577 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-07-13 18:19:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1211. [2022-07-13 18:19:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1000 states have (on average 1.294) internal successors, (1294), 1010 states have internal predecessors, (1294), 146 states have call successors, (146), 64 states have call predecessors, (146), 64 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-07-13 18:19:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1586 transitions. [2022-07-13 18:19:21,168 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1586 transitions. Word has length 298 [2022-07-13 18:19:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:21,168 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1586 transitions. [2022-07-13 18:19:21,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 18:19:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1586 transitions. [2022-07-13 18:19:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-13 18:19:21,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:21,170 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:21,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 18:19:21,170 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1771224456, now seen corresponding path program 1 times [2022-07-13 18:19:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:21,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490708643] [2022-07-13 18:19:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:19:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:19:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-13 18:19:21,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:21,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490708643] [2022-07-13 18:19:21,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490708643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:21,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685201498] [2022-07-13 18:19:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:21,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:21,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:21,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 18:19:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:21,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 18:19:21,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-13 18:19:21,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:21,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685201498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:21,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:21,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2022-07-13 18:19:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314371359] [2022-07-13 18:19:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:19:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:19:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:19:21,590 INFO L87 Difference]: Start difference. First operand 1211 states and 1586 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:22,474 INFO L93 Difference]: Finished difference Result 3866 states and 5297 transitions. [2022-07-13 18:19:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 18:19:22,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2022-07-13 18:19:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:22,501 INFO L225 Difference]: With dead ends: 3866 [2022-07-13 18:19:22,502 INFO L226 Difference]: Without dead ends: 3000 [2022-07-13 18:19:22,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 18:19:22,505 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1333 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:22,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 4008 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 18:19:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2022-07-13 18:19:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1590. [2022-07-13 18:19:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1304 states have (on average 1.2921779141104295) internal successors, (1685), 1318 states have internal predecessors, (1685), 201 states have call successors, (201), 84 states have call predecessors, (201), 84 states have return successors, (201), 191 states have call predecessors, (201), 201 states have call successors, (201) [2022-07-13 18:19:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2087 transitions. [2022-07-13 18:19:22,615 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2087 transitions. Word has length 298 [2022-07-13 18:19:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:22,615 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2087 transitions. [2022-07-13 18:19:22,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 18:19:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2087 transitions. [2022-07-13 18:19:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-13 18:19:22,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:22,617 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:22,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:22,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-13 18:19:22,836 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash -973687172, now seen corresponding path program 1 times [2022-07-13 18:19:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:22,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427826757] [2022-07-13 18:19:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:22,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-13 18:19:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-13 18:19:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2022-07-13 18:19:22,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:22,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427826757] [2022-07-13 18:19:22,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427826757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:22,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:22,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:19:22,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869498516] [2022-07-13 18:19:22,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:22,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:19:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:19:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:22,931 INFO L87 Difference]: Start difference. First operand 1590 states and 2087 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-13 18:19:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:23,395 INFO L93 Difference]: Finished difference Result 2884 states and 3813 transitions. [2022-07-13 18:19:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:19:23,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 312 [2022-07-13 18:19:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:23,404 INFO L225 Difference]: With dead ends: 2884 [2022-07-13 18:19:23,405 INFO L226 Difference]: Without dead ends: 1668 [2022-07-13 18:19:23,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:19:23,407 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 512 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:23,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 976 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:19:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-07-13 18:19:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1393. [2022-07-13 18:19:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1151 states have (on average 1.2745438748913989) internal successors, (1467), 1159 states have internal predecessors, (1467), 171 states have call successors, (171), 70 states have call predecessors, (171), 70 states have return successors, (171), 163 states have call predecessors, (171), 171 states have call successors, (171) [2022-07-13 18:19:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1809 transitions. [2022-07-13 18:19:23,495 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1809 transitions. Word has length 312 [2022-07-13 18:19:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:23,495 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1809 transitions. [2022-07-13 18:19:23,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-13 18:19:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1809 transitions. [2022-07-13 18:19:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:23,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:23,498 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:23,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 18:19:23,498 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1681987816, now seen corresponding path program 1 times [2022-07-13 18:19:23,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:23,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235564951] [2022-07-13 18:19:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-13 18:19:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:23,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235564951] [2022-07-13 18:19:23,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235564951] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:23,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116121511] [2022-07-13 18:19:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:23,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:23,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:23,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:23,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 18:19:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:23,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 18:19:23,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 224 proven. 81 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-07-13 18:19:24,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 34 proven. 77 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-13 18:19:24,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116121511] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:24,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:24,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 27 [2022-07-13 18:19:24,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058945132] [2022-07-13 18:19:24,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:24,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 18:19:24,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 18:19:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-07-13 18:19:24,656 INFO L87 Difference]: Start difference. First operand 1393 states and 1809 transitions. Second operand has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) [2022-07-13 18:19:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:36,978 INFO L93 Difference]: Finished difference Result 14600 states and 20639 transitions. [2022-07-13 18:19:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-07-13 18:19:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) Word has length 352 [2022-07-13 18:19:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:37,030 INFO L225 Difference]: With dead ends: 14600 [2022-07-13 18:19:37,030 INFO L226 Difference]: Without dead ends: 13512 [2022-07-13 18:19:37,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 756 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20978 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6177, Invalid=49283, Unknown=0, NotChecked=0, Total=55460 [2022-07-13 18:19:37,048 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 9100 mSDsluCounter, 10218 mSDsCounter, 0 mSdLazyCounter, 13948 mSolverCounterSat, 4966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9100 SdHoareTripleChecker+Valid, 11044 SdHoareTripleChecker+Invalid, 18914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4966 IncrementalHoareTripleChecker+Valid, 13948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:37,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9100 Valid, 11044 Invalid, 18914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4966 Valid, 13948 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-13 18:19:37,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2022-07-13 18:19:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 6003. [2022-07-13 18:19:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 4737 states have (on average 1.2947012877348534) internal successors, (6133), 4788 states have internal predecessors, (6133), 924 states have call successors, (924), 317 states have call predecessors, (924), 341 states have return successors, (972), 897 states have call predecessors, (972), 924 states have call successors, (972) [2022-07-13 18:19:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 8029 transitions. [2022-07-13 18:19:37,696 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 8029 transitions. Word has length 352 [2022-07-13 18:19:37,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:37,697 INFO L495 AbstractCegarLoop]: Abstraction has 6003 states and 8029 transitions. [2022-07-13 18:19:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) [2022-07-13 18:19:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 8029 transitions. [2022-07-13 18:19:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:37,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:37,709 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:37,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:37,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-13 18:19:37,927 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1015767607, now seen corresponding path program 1 times [2022-07-13 18:19:37,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:37,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236252022] [2022-07-13 18:19:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:37,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-07-13 18:19:38,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:38,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236252022] [2022-07-13 18:19:38,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236252022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:38,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825401326] [2022-07-13 18:19:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:38,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:38,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:38,056 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:38,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 18:19:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:38,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 18:19:38,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2022-07-13 18:19:38,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:38,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825401326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:38,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:38,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-07-13 18:19:38,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994430102] [2022-07-13 18:19:38,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:38,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:19:38,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:19:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:19:38,305 INFO L87 Difference]: Start difference. First operand 6003 states and 8029 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:19:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:39,210 INFO L93 Difference]: Finished difference Result 14528 states and 19640 transitions. [2022-07-13 18:19:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:19:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 352 [2022-07-13 18:19:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:39,230 INFO L225 Difference]: With dead ends: 14528 [2022-07-13 18:19:39,231 INFO L226 Difference]: Without dead ends: 9050 [2022-07-13 18:19:39,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:19:39,242 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 522 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:39,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 2361 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:19:39,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9050 states. [2022-07-13 18:19:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9050 to 4402. [2022-07-13 18:19:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3523 states have (on average 1.2713596366732898) internal successors, (4479), 3571 states have internal predecessors, (4479), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-13 18:19:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5733 transitions. [2022-07-13 18:19:39,658 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5733 transitions. Word has length 352 [2022-07-13 18:19:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:39,658 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 5733 transitions. [2022-07-13 18:19:39,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:19:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5733 transitions. [2022-07-13 18:19:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:39,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:39,668 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:39,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-13 18:19:39,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:39,883 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:39,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:39,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1268446409, now seen corresponding path program 1 times [2022-07-13 18:19:39,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:39,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342854887] [2022-07-13 18:19:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:39,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:19:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-07-13 18:19:40,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:40,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342854887] [2022-07-13 18:19:40,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342854887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:40,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:40,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:19:40,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760595348] [2022-07-13 18:19:40,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:40,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:19:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:19:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:40,061 INFO L87 Difference]: Start difference. First operand 4402 states and 5733 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-13 18:19:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:40,619 INFO L93 Difference]: Finished difference Result 8387 states and 10967 transitions. [2022-07-13 18:19:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:19:40,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 352 [2022-07-13 18:19:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:40,630 INFO L225 Difference]: With dead ends: 8387 [2022-07-13 18:19:40,631 INFO L226 Difference]: Without dead ends: 4402 [2022-07-13 18:19:40,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:19:40,638 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 379 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:40,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 467 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:40,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-07-13 18:19:40,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4402. [2022-07-13 18:19:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3523 states have (on average 1.2702242407039455) internal successors, (4475), 3571 states have internal predecessors, (4475), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-13 18:19:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5729 transitions. [2022-07-13 18:19:40,998 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5729 transitions. Word has length 352 [2022-07-13 18:19:40,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:40,998 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 5729 transitions. [2022-07-13 18:19:40,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-13 18:19:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5729 transitions. [2022-07-13 18:19:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:41,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:41,006 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 18:19:41,006 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1009163978, now seen corresponding path program 1 times [2022-07-13 18:19:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:41,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103594159] [2022-07-13 18:19:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2022-07-13 18:19:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:41,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103594159] [2022-07-13 18:19:41,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103594159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:41,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:41,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:41,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355391097] [2022-07-13 18:19:41,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:41,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:41,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:41,092 INFO L87 Difference]: Start difference. First operand 4402 states and 5729 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:41,851 INFO L93 Difference]: Finished difference Result 12263 states and 16036 transitions. [2022-07-13 18:19:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:41,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2022-07-13 18:19:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:41,869 INFO L225 Difference]: With dead ends: 12263 [2022-07-13 18:19:41,869 INFO L226 Difference]: Without dead ends: 8320 [2022-07-13 18:19:41,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:41,876 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 216 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:41,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 648 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:19:41,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2022-07-13 18:19:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 4653. [2022-07-13 18:19:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 3774 states have (on average 1.2652358240593535) internal successors, (4775), 3822 states have internal predecessors, (4775), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-13 18:19:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 6029 transitions. [2022-07-13 18:19:42,299 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 6029 transitions. Word has length 352 [2022-07-13 18:19:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:42,300 INFO L495 AbstractCegarLoop]: Abstraction has 4653 states and 6029 transitions. [2022-07-13 18:19:42,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 6029 transitions. [2022-07-13 18:19:42,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-13 18:19:42,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:42,308 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:42,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 18:19:42,309 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash -712838708, now seen corresponding path program 1 times [2022-07-13 18:19:42,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:42,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812920547] [2022-07-13 18:19:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:42,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:19:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:19:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:19:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-13 18:19:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:19:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-13 18:19:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:19:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:19:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:19:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:19:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:19:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-13 18:19:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2022-07-13 18:19:42,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:42,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812920547] [2022-07-13 18:19:42,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812920547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:42,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:19:42,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:19:42,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097217292] [2022-07-13 18:19:42,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:42,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:42,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:42,408 INFO L87 Difference]: Start difference. First operand 4653 states and 6029 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:42,932 INFO L93 Difference]: Finished difference Result 8842 states and 11502 transitions. [2022-07-13 18:19:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:19:42,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2022-07-13 18:19:42,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:42,943 INFO L225 Difference]: With dead ends: 8842 [2022-07-13 18:19:42,943 INFO L226 Difference]: Without dead ends: 4512 [2022-07-13 18:19:42,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:19:42,953 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 54 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:42,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 551 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:19:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2022-07-13 18:19:43,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4512. [2022-07-13 18:19:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 3633 states have (on average 1.2614918799889898) internal successors, (4583), 3681 states have internal predecessors, (4583), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-13 18:19:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 5837 transitions. [2022-07-13 18:19:43,395 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 5837 transitions. Word has length 352 [2022-07-13 18:19:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:43,395 INFO L495 AbstractCegarLoop]: Abstraction has 4512 states and 5837 transitions. [2022-07-13 18:19:43,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:19:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 5837 transitions. [2022-07-13 18:19:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-13 18:19:43,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:43,403 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 18:19:43,404 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1863458373, now seen corresponding path program 1 times [2022-07-13 18:19:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:43,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702491005] [2022-07-13 18:19:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 18:19:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-13 18:19:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:19:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:19:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:19:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 18:19:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:19:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:19:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:19:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:19:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-13 18:19:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-13 18:19:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-07-13 18:19:43,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:43,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702491005] [2022-07-13 18:19:43,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702491005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:43,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763131941] [2022-07-13 18:19:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:43,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:43,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:43,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:43,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 18:19:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:43,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:19:43,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-07-13 18:19:43,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:19:43,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763131941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:19:43,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:19:43,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:19:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283071445] [2022-07-13 18:19:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:19:43,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:19:43,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:43,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:19:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:19:43,983 INFO L87 Difference]: Start difference. First operand 4512 states and 5837 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:19:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:44,356 INFO L93 Difference]: Finished difference Result 9197 states and 11893 transitions. [2022-07-13 18:19:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:19:44,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 353 [2022-07-13 18:19:44,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:44,398 INFO L225 Difference]: With dead ends: 9197 [2022-07-13 18:19:44,398 INFO L226 Difference]: Without dead ends: 4452 [2022-07-13 18:19:44,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:19:44,419 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 40 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:44,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 672 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:19:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2022-07-13 18:19:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4452. [2022-07-13 18:19:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3594 states have (on average 1.2276015581524764) internal successors, (4412), 3630 states have internal predecessors, (4412), 612 states have call successors, (612), 245 states have call predecessors, (612), 245 states have return successors, (612), 576 states have call predecessors, (612), 612 states have call successors, (612) [2022-07-13 18:19:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 5636 transitions. [2022-07-13 18:19:44,966 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 5636 transitions. Word has length 353 [2022-07-13 18:19:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:19:44,970 INFO L495 AbstractCegarLoop]: Abstraction has 4452 states and 5636 transitions. [2022-07-13 18:19:44,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:19:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 5636 transitions. [2022-07-13 18:19:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-13 18:19:44,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:19:44,999 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:19:45,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 18:19:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:45,200 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:19:45,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:19:45,200 INFO L85 PathProgramCache]: Analyzing trace with hash -755096139, now seen corresponding path program 1 times [2022-07-13 18:19:45,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:19:45,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697414102] [2022-07-13 18:19:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:45,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:19:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:19:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:19:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:19:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:19:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:19:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:19:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:19:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:19:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:19:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:19:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:19:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:19:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:19:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:19:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:19:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:19:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:19:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:19:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:19:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:19:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:19:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:19:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 18:19:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:19:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:19:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:19:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:19:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-13 18:19:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-13 18:19:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-13 18:19:45,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:19:45,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697414102] [2022-07-13 18:19:45,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697414102] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:19:45,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300314856] [2022-07-13 18:19:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:19:45,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:19:45,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:19:45,610 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:19:45,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 18:19:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:19:45,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 18:19:45,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:19:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 190 proven. 105 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2022-07-13 18:19:46,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:19:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 33 proven. 72 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-13 18:19:47,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300314856] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:19:47,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:19:47,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2022-07-13 18:19:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002803471] [2022-07-13 18:19:47,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:19:47,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 18:19:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:19:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 18:19:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2022-07-13 18:19:47,044 INFO L87 Difference]: Start difference. First operand 4452 states and 5636 transitions. Second operand has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-13 18:20:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:18,019 INFO L93 Difference]: Finished difference Result 24395 states and 32063 transitions. [2022-07-13 18:20:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 509 states. [2022-07-13 18:20:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) Word has length 353 [2022-07-13 18:20:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:18,125 INFO L225 Difference]: With dead ends: 24395 [2022-07-13 18:20:18,135 INFO L226 Difference]: Without dead ends: 20475 [2022-07-13 18:20:18,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 770 SyntacticMatches, 1 SemanticMatches, 534 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124605 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=21449, Invalid=265311, Unknown=0, NotChecked=0, Total=286760 [2022-07-13 18:20:18,200 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 5772 mSDsluCounter, 19820 mSDsCounter, 0 mSdLazyCounter, 24596 mSolverCounterSat, 5966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5772 SdHoareTripleChecker+Valid, 21562 SdHoareTripleChecker+Invalid, 30562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5966 IncrementalHoareTripleChecker+Valid, 24596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:18,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5772 Valid, 21562 Invalid, 30562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5966 Valid, 24596 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-07-13 18:20:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20475 states. [2022-07-13 18:20:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20475 to 7771. [2022-07-13 18:20:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7771 states, 6275 states have (on average 1.2302788844621515) internal successors, (7720), 6340 states have internal predecessors, (7720), 1061 states have call successors, (1061), 434 states have call predecessors, (1061), 434 states have return successors, (1061), 996 states have call predecessors, (1061), 1061 states have call successors, (1061) [2022-07-13 18:20:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7771 states to 7771 states and 9842 transitions. [2022-07-13 18:20:19,728 INFO L78 Accepts]: Start accepts. Automaton has 7771 states and 9842 transitions. Word has length 353 [2022-07-13 18:20:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:19,730 INFO L495 AbstractCegarLoop]: Abstraction has 7771 states and 9842 transitions. [2022-07-13 18:20:19,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-13 18:20:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7771 states and 9842 transitions. [2022-07-13 18:20:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-07-13 18:20:19,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:19,761 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:19,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:19,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:19,979 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:19,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:19,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2074094901, now seen corresponding path program 1 times [2022-07-13 18:20:19,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:19,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918669605] [2022-07-13 18:20:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:19,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:20:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:20:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:20:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:20:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:20:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 18:20:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-13 18:20:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:20:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:20:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:20:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-13 18:20:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 18:20:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:20:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:20:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:20:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:20:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-13 18:20:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-13 18:20:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-13 18:20:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2022-07-13 18:20:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:20,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918669605] [2022-07-13 18:20:20,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918669605] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:20,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022758679] [2022-07-13 18:20:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:20,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:20,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:20,307 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:20,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 18:20:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:20,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-13 18:20:20,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 328 proven. 118 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-13 18:20:21,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:20:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 51 proven. 204 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-13 18:20:21,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022758679] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:20:21,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:20:21,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 19] total 35 [2022-07-13 18:20:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874575372] [2022-07-13 18:20:21,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:20:21,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-13 18:20:21,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:21,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-13 18:20:21,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 18:20:21,864 INFO L87 Difference]: Start difference. First operand 7771 states and 9842 transitions. Second operand has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) [2022-07-13 18:20:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:38,977 INFO L93 Difference]: Finished difference Result 48206 states and 66977 transitions. [2022-07-13 18:20:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-07-13 18:20:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) Word has length 363 [2022-07-13 18:20:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:39,265 INFO L225 Difference]: With dead ends: 48206 [2022-07-13 18:20:39,265 INFO L226 Difference]: Without dead ends: 41046 [2022-07-13 18:20:39,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15097 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3227, Invalid=38185, Unknown=0, NotChecked=0, Total=41412 [2022-07-13 18:20:39,320 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 3970 mSDsluCounter, 17472 mSDsCounter, 0 mSdLazyCounter, 17550 mSolverCounterSat, 1900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3996 SdHoareTripleChecker+Valid, 18569 SdHoareTripleChecker+Invalid, 19450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1900 IncrementalHoareTripleChecker+Valid, 17550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:39,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3996 Valid, 18569 Invalid, 19450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1900 Valid, 17550 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-13 18:20:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41046 states. [2022-07-13 18:20:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41046 to 8231. [2022-07-13 18:20:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 6681 states have (on average 1.2263134261338122) internal successors, (8193), 6746 states have internal predecessors, (8193), 1090 states have call successors, (1090), 457 states have call predecessors, (1090), 459 states have return successors, (1094), 1027 states have call predecessors, (1094), 1090 states have call successors, (1094) [2022-07-13 18:20:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 10377 transitions. [2022-07-13 18:20:41,562 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 10377 transitions. Word has length 363 [2022-07-13 18:20:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:41,591 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 10377 transitions. [2022-07-13 18:20:41,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) [2022-07-13 18:20:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 10377 transitions. [2022-07-13 18:20:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-07-13 18:20:41,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:41,605 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:41,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:41,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:41,824 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:41,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1392154793, now seen corresponding path program 1 times [2022-07-13 18:20:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:41,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795984740] [2022-07-13 18:20:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:41,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 18:20:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:20:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:20:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 18:20:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:20:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-13 18:20:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-13 18:20:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-13 18:20:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-13 18:20:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-13 18:20:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:20:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-13 18:20:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-13 18:20:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-13 18:20:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:20:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-07-13 18:20:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-13 18:20:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-13 18:20:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-13 18:20:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-07-13 18:20:41,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:41,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795984740] [2022-07-13 18:20:41,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795984740] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:41,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873306541] [2022-07-13 18:20:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:41,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:41,975 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:41,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 18:20:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:42,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:20:42,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-07-13 18:20:42,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:20:42,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873306541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:42,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:20:42,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-13 18:20:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454459478] [2022-07-13 18:20:42,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:20:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:20:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:42,595 INFO L87 Difference]: Start difference. First operand 8231 states and 10377 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:20:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:43,708 INFO L93 Difference]: Finished difference Result 15601 states and 19756 transitions. [2022-07-13 18:20:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:20:43,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 366 [2022-07-13 18:20:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:43,758 INFO L225 Difference]: With dead ends: 15601 [2022-07-13 18:20:43,758 INFO L226 Difference]: Without dead ends: 8259 [2022-07-13 18:20:43,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:43,784 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 287 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:43,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 520 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:20:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2022-07-13 18:20:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8231. [2022-07-13 18:20:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 6681 states have (on average 1.2252656787906002) internal successors, (8186), 6746 states have internal predecessors, (8186), 1090 states have call successors, (1090), 457 states have call predecessors, (1090), 459 states have return successors, (1094), 1027 states have call predecessors, (1094), 1090 states have call successors, (1094) [2022-07-13 18:20:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 10370 transitions. [2022-07-13 18:20:44,961 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 10370 transitions. Word has length 366 [2022-07-13 18:20:44,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:44,961 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 10370 transitions. [2022-07-13 18:20:44,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 18:20:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 10370 transitions. [2022-07-13 18:20:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-07-13 18:20:44,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:44,976 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:45,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:45,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:45,196 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:45,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1571060290, now seen corresponding path program 1 times [2022-07-13 18:20:45,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:45,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027996410] [2022-07-13 18:20:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:45,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 18:20:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:20:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:20:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 18:20:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:20:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 18:20:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-13 18:20:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-13 18:20:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-13 18:20:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-13 18:20:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:20:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-13 18:20:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-13 18:20:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-13 18:20:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:20:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-07-13 18:20:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-07-13 18:20:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-13 18:20:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-07-13 18:20:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2022-07-13 18:20:45,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027996410] [2022-07-13 18:20:45,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027996410] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:45,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245751787] [2022-07-13 18:20:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:45,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:45,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:45,359 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:45,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 18:20:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:45,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:20:45,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-13 18:20:46,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:20:46,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245751787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:46,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:20:46,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-13 18:20:46,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931595836] [2022-07-13 18:20:46,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:46,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:20:46,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:20:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:46,073 INFO L87 Difference]: Start difference. First operand 8231 states and 10370 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 18:20:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:47,293 INFO L93 Difference]: Finished difference Result 15750 states and 19920 transitions. [2022-07-13 18:20:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:20:47,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 366 [2022-07-13 18:20:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:47,355 INFO L225 Difference]: With dead ends: 15750 [2022-07-13 18:20:47,355 INFO L226 Difference]: Without dead ends: 8294 [2022-07-13 18:20:47,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:20:47,376 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 305 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 428 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:20:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2022-07-13 18:20:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 8273. [2022-07-13 18:20:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8273 states, 6723 states have (on average 1.2217759928603302) internal successors, (8214), 6788 states have internal predecessors, (8214), 1090 states have call successors, (1090), 457 states have call predecessors, (1090), 459 states have return successors, (1094), 1027 states have call predecessors, (1094), 1090 states have call successors, (1094) [2022-07-13 18:20:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8273 states to 8273 states and 10398 transitions. [2022-07-13 18:20:48,500 INFO L78 Accepts]: Start accepts. Automaton has 8273 states and 10398 transitions. Word has length 366 [2022-07-13 18:20:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:48,501 INFO L495 AbstractCegarLoop]: Abstraction has 8273 states and 10398 transitions. [2022-07-13 18:20:48,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 18:20:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8273 states and 10398 transitions. [2022-07-13 18:20:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-07-13 18:20:48,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:48,514 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:48,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:48,734 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2036819598, now seen corresponding path program 1 times [2022-07-13 18:20:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:48,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104121] [2022-07-13 18:20:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 18:20:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 18:20:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 18:20:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 18:20:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 18:20:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-13 18:20:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-13 18:20:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-13 18:20:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 18:20:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-13 18:20:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:20:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-13 18:20:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:20:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-13 18:20:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-13 18:20:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-07-13 18:20:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-13 18:20:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-07-13 18:20:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-07-13 18:20:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-13 18:20:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-07-13 18:20:48,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104121] [2022-07-13 18:20:48,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193820735] [2022-07-13 18:20:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:48,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:48,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:48,931 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:48,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 18:20:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:49,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 18:20:49,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-07-13 18:20:49,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:20:49,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193820735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:49,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:20:49,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 18:20:49,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100910944] [2022-07-13 18:20:49,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:49,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:20:49,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:20:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:20:49,195 INFO L87 Difference]: Start difference. First operand 8273 states and 10398 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:20:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:50,131 INFO L93 Difference]: Finished difference Result 16093 states and 20276 transitions. [2022-07-13 18:20:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:20:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 367 [2022-07-13 18:20:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:50,147 INFO L225 Difference]: With dead ends: 16093 [2022-07-13 18:20:50,147 INFO L226 Difference]: Without dead ends: 7821 [2022-07-13 18:20:50,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:20:50,174 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 28 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:50,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 679 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:20:50,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7821 states. [2022-07-13 18:20:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 7821. [2022-07-13 18:20:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7821 states, 6324 states have (on average 1.2253320683111955) internal successors, (7749), 6389 states have internal predecessors, (7749), 1061 states have call successors, (1061), 435 states have call predecessors, (1061), 435 states have return successors, (1061), 996 states have call predecessors, (1061), 1061 states have call successors, (1061) [2022-07-13 18:20:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7821 states to 7821 states and 9871 transitions. [2022-07-13 18:20:51,290 INFO L78 Accepts]: Start accepts. Automaton has 7821 states and 9871 transitions. Word has length 367 [2022-07-13 18:20:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:51,291 INFO L495 AbstractCegarLoop]: Abstraction has 7821 states and 9871 transitions. [2022-07-13 18:20:51,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 18:20:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7821 states and 9871 transitions. [2022-07-13 18:20:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-07-13 18:20:51,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:51,309 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:51,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 18:20:51,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-07-13 18:20:51,520 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:51,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2067520339, now seen corresponding path program 1 times [2022-07-13 18:20:51,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:51,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406199369] [2022-07-13 18:20:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:51,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:20:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:20:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:20:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:20:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:20:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:20:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:20:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:20:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:20:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:20:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-13 18:20:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:20:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-07-13 18:20:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:20:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-13 18:20:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-13 18:20:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-13 18:20:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-13 18:20:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-13 18:20:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-13 18:20:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-07-13 18:20:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:51,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406199369] [2022-07-13 18:20:51,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406199369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:20:51,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:20:51,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:20:51,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112905284] [2022-07-13 18:20:51,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:20:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:20:51,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:20:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:20:51,752 INFO L87 Difference]: Start difference. First operand 7821 states and 9871 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 8 states have internal predecessors, (124), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 18:20:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:20:54,656 INFO L93 Difference]: Finished difference Result 20706 states and 26884 transitions. [2022-07-13 18:20:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 18:20:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 8 states have internal predecessors, (124), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 374 [2022-07-13 18:20:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:20:54,681 INFO L225 Difference]: With dead ends: 20706 [2022-07-13 18:20:54,681 INFO L226 Difference]: Without dead ends: 13626 [2022-07-13 18:20:54,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 18:20:54,693 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 706 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:20:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 2955 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:20:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13626 states. [2022-07-13 18:20:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13626 to 6346. [2022-07-13 18:20:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6346 states, 5219 states have (on average 1.2165165740563326) internal successors, (6349), 5264 states have internal predecessors, (6349), 781 states have call successors, (781), 345 states have call predecessors, (781), 345 states have return successors, (781), 736 states have call predecessors, (781), 781 states have call successors, (781) [2022-07-13 18:20:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 7911 transitions. [2022-07-13 18:20:55,512 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 7911 transitions. Word has length 374 [2022-07-13 18:20:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:20:55,512 INFO L495 AbstractCegarLoop]: Abstraction has 6346 states and 7911 transitions. [2022-07-13 18:20:55,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 8 states have internal predecessors, (124), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 18:20:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 7911 transitions. [2022-07-13 18:20:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-07-13 18:20:55,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:20:55,520 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:20:55,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 18:20:55,521 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:20:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:20:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1214762829, now seen corresponding path program 1 times [2022-07-13 18:20:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:20:55,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159086284] [2022-07-13 18:20:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:20:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:20:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:20:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:20:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:20:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:20:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:20:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:20:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:20:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:20:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:20:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:20:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:20:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:20:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:20:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:20:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:20:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-13 18:20:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-13 18:20:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:20:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:20:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:20:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:20:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:20:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:20:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:20:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-13 18:20:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-13 18:20:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-13 18:20:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-13 18:20:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-13 18:20:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-13 18:20:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-07-13 18:20:55,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:20:55,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159086284] [2022-07-13 18:20:55,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159086284] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:20:55,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445414053] [2022-07-13 18:20:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:20:55,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:20:55,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:20:55,793 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:20:55,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 18:20:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:20:56,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 18:20:56,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:20:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 457 proven. 205 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-07-13 18:20:57,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:20:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 113 proven. 189 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-07-13 18:20:58,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445414053] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:20:58,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:20:58,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 21] total 50 [2022-07-13 18:20:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614637880] [2022-07-13 18:20:58,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:20:58,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-13 18:20:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:20:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-13 18:20:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2022-07-13 18:20:58,304 INFO L87 Difference]: Start difference. First operand 6346 states and 7911 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) [2022-07-13 18:21:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:12,392 INFO L93 Difference]: Finished difference Result 24351 states and 31886 transitions. [2022-07-13 18:21:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-07-13 18:21:12,393 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) Word has length 374 [2022-07-13 18:21:12,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:12,484 INFO L225 Difference]: With dead ends: 24351 [2022-07-13 18:21:12,484 INFO L226 Difference]: Without dead ends: 18626 [2022-07-13 18:21:12,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11286 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2787, Invalid=32745, Unknown=0, NotChecked=0, Total=35532 [2022-07-13 18:21:12,507 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 3027 mSDsluCounter, 21690 mSDsCounter, 0 mSdLazyCounter, 16346 mSolverCounterSat, 1385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 22822 SdHoareTripleChecker+Invalid, 17731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 16346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:12,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 22822 Invalid, 17731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1385 Valid, 16346 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-13 18:21:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18626 states. [2022-07-13 18:21:13,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18626 to 6340. [2022-07-13 18:21:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 5212 states have (on average 1.2158480429777436) internal successors, (6337), 5257 states have internal predecessors, (6337), 781 states have call successors, (781), 346 states have call predecessors, (781), 346 states have return successors, (781), 736 states have call predecessors, (781), 781 states have call successors, (781) [2022-07-13 18:21:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 7899 transitions. [2022-07-13 18:21:13,651 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 7899 transitions. Word has length 374 [2022-07-13 18:21:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:13,651 INFO L495 AbstractCegarLoop]: Abstraction has 6340 states and 7899 transitions. [2022-07-13 18:21:13,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) [2022-07-13 18:21:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 7899 transitions. [2022-07-13 18:21:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-13 18:21:13,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:13,663 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:13,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 18:21:13,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-13 18:21:13,882 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash 72638392, now seen corresponding path program 1 times [2022-07-13 18:21:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:13,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969191485] [2022-07-13 18:21:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:13,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-13 18:21:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-13 18:21:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:21:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:21:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:21:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:21:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-13 18:21:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-13 18:21:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:21:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-13 18:21:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:21:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-13 18:21:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-13 18:21:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-07-13 18:21:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-07-13 18:21:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-07-13 18:21:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2022-07-13 18:21:14,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:14,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969191485] [2022-07-13 18:21:14,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969191485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:21:14,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:21:14,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:21:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987073397] [2022-07-13 18:21:14,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:21:14,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:21:14,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:21:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:14,080 INFO L87 Difference]: Start difference. First operand 6340 states and 7899 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:21:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:14,896 INFO L93 Difference]: Finished difference Result 9264 states and 11551 transitions. [2022-07-13 18:21:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:21:14,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 385 [2022-07-13 18:21:14,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:14,918 INFO L225 Difference]: With dead ends: 9264 [2022-07-13 18:21:14,931 INFO L226 Difference]: Without dead ends: 3460 [2022-07-13 18:21:14,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:21:14,937 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 51 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:14,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 542 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:21:14,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-07-13 18:21:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3460. [2022-07-13 18:21:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 2860 states have (on average 1.201048951048951) internal successors, (3435), 2884 states have internal predecessors, (3435), 413 states have call successors, (413), 186 states have call predecessors, (413), 186 states have return successors, (413), 389 states have call predecessors, (413), 413 states have call successors, (413) [2022-07-13 18:21:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4261 transitions. [2022-07-13 18:21:15,699 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4261 transitions. Word has length 385 [2022-07-13 18:21:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:15,700 INFO L495 AbstractCegarLoop]: Abstraction has 3460 states and 4261 transitions. [2022-07-13 18:21:15,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 18:21:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4261 transitions. [2022-07-13 18:21:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-13 18:21:15,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:15,732 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:15,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-13 18:21:15,732 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1127420960, now seen corresponding path program 1 times [2022-07-13 18:21:15,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:15,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992539104] [2022-07-13 18:21:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-13 18:21:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:21:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:21:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:21:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:21:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-13 18:21:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-13 18:21:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:21:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-13 18:21:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-13 18:21:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-13 18:21:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-13 18:21:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-13 18:21:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:21:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:21:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 52 proven. 52 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2022-07-13 18:21:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:16,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992539104] [2022-07-13 18:21:16,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992539104] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:21:16,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922316294] [2022-07-13 18:21:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:16,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:16,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:16,094 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:21:16,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 18:21:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:16,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-13 18:21:16,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 550 proven. 249 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-13 18:21:17,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:21:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 158 proven. 154 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-13 18:21:19,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922316294] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:21:19,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:21:19,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 21] total 56 [2022-07-13 18:21:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34011425] [2022-07-13 18:21:19,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:21:19,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-13 18:21:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-13 18:21:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2859, Unknown=0, NotChecked=0, Total=3080 [2022-07-13 18:21:19,029 INFO L87 Difference]: Start difference. First operand 3460 states and 4261 transitions. Second operand has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) [2022-07-13 18:21:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:21:36,941 INFO L93 Difference]: Finished difference Result 23214 states and 30444 transitions. [2022-07-13 18:21:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-13 18:21:36,942 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) Word has length 385 [2022-07-13 18:21:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:21:36,980 INFO L225 Difference]: With dead ends: 23214 [2022-07-13 18:21:36,980 INFO L226 Difference]: Without dead ends: 20221 [2022-07-13 18:21:36,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 828 SyntacticMatches, 3 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13429 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2847, Invalid=38973, Unknown=0, NotChecked=0, Total=41820 [2022-07-13 18:21:36,992 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 4288 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 15011 mSolverCounterSat, 1841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 17904 SdHoareTripleChecker+Invalid, 17313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1841 IncrementalHoareTripleChecker+Valid, 15011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:21:36,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4315 Valid, 17904 Invalid, 17313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1841 Valid, 15011 Invalid, 0 Unknown, 461 Unchecked, 8.5s Time] [2022-07-13 18:21:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20221 states. [2022-07-13 18:21:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20221 to 4717. [2022-07-13 18:21:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 3842 states have (on average 1.2040603852160334) internal successors, (4626), 3878 states have internal predecessors, (4626), 611 states have call successors, (611), 263 states have call predecessors, (611), 263 states have return successors, (611), 575 states have call predecessors, (611), 611 states have call successors, (611) [2022-07-13 18:21:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 5848 transitions. [2022-07-13 18:21:37,893 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 5848 transitions. Word has length 385 [2022-07-13 18:21:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:21:37,894 INFO L495 AbstractCegarLoop]: Abstraction has 4717 states and 5848 transitions. [2022-07-13 18:21:37,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) [2022-07-13 18:21:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 5848 transitions. [2022-07-13 18:21:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-07-13 18:21:37,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:21:37,901 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:21:37,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-13 18:21:38,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:38,118 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:21:38,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:21:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash -453380509, now seen corresponding path program 1 times [2022-07-13 18:21:38,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:21:38,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567613093] [2022-07-13 18:21:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:21:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:21:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:21:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:21:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:21:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:21:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:21:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:21:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:21:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:21:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:21:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:21:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:21:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:21:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:21:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:21:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:21:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:21:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-13 18:21:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 18:21:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 18:21:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-13 18:21:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-13 18:21:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-13 18:21:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-13 18:21:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-13 18:21:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-13 18:21:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-13 18:21:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-13 18:21:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-13 18:21:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-13 18:21:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-13 18:21:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-13 18:21:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:21:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-13 18:21:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-13 18:21:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-07-13 18:21:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:21:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567613093] [2022-07-13 18:21:38,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567613093] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:21:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272464365] [2022-07-13 18:21:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:21:38,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:21:38,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:21:38,448 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:21:38,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 18:21:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:21:38,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 18:21:38,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:21:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 512 proven. 23 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-07-13 18:21:39,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:21:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-07-13 18:21:39,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272464365] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:21:39,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:21:39,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 9] total 35 [2022-07-13 18:21:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463557342] [2022-07-13 18:21:39,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:21:39,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-13 18:21:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:21:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-13 18:21:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 18:21:39,504 INFO L87 Difference]: Start difference. First operand 4717 states and 5848 transitions. Second operand has 35 states, 35 states have (on average 11.2) internal successors, (392), 32 states have internal predecessors, (392), 14 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (75), 16 states have call predecessors, (75), 14 states have call successors, (75) [2022-07-13 18:22:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:22:51,763 INFO L93 Difference]: Finished difference Result 81961 states and 107500 transitions. [2022-07-13 18:22:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1001 states. [2022-07-13 18:22:51,764 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 11.2) internal successors, (392), 32 states have internal predecessors, (392), 14 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (75), 16 states have call predecessors, (75), 14 states have call successors, (75) Word has length 411 [2022-07-13 18:22:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:22:51,958 INFO L225 Difference]: With dead ends: 81961 [2022-07-13 18:22:51,959 INFO L226 Difference]: Without dead ends: 77856 [2022-07-13 18:22:52,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 1028 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493255 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=51115, Invalid=1008755, Unknown=0, NotChecked=0, Total=1059870 [2022-07-13 18:22:52,134 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 8146 mSDsluCounter, 55545 mSDsCounter, 0 mSdLazyCounter, 62456 mSolverCounterSat, 6929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8175 SdHoareTripleChecker+Valid, 59114 SdHoareTripleChecker+Invalid, 69385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6929 IncrementalHoareTripleChecker+Valid, 62456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:22:52,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8175 Valid, 59114 Invalid, 69385 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6929 Valid, 62456 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time] [2022-07-13 18:22:52,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77856 states. [2022-07-13 18:22:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77856 to 10174. [2022-07-13 18:22:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10174 states, 8256 states have (on average 1.2130571705426356) internal successors, (10015), 8348 states have internal predecessors, (10015), 1338 states have call successors, (1338), 579 states have call predecessors, (1338), 579 states have return successors, (1338), 1246 states have call predecessors, (1338), 1338 states have call successors, (1338) [2022-07-13 18:22:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10174 states to 10174 states and 12691 transitions. [2022-07-13 18:22:55,174 INFO L78 Accepts]: Start accepts. Automaton has 10174 states and 12691 transitions. Word has length 411 [2022-07-13 18:22:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:22:55,174 INFO L495 AbstractCegarLoop]: Abstraction has 10174 states and 12691 transitions. [2022-07-13 18:22:55,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 11.2) internal successors, (392), 32 states have internal predecessors, (392), 14 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (75), 16 states have call predecessors, (75), 14 states have call successors, (75) [2022-07-13 18:22:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 10174 states and 12691 transitions. [2022-07-13 18:22:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-07-13 18:22:55,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:22:55,188 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:22:55,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 18:22:55,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:22:55,406 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:22:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:22:55,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1532239376, now seen corresponding path program 1 times [2022-07-13 18:22:55,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:22:55,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420381960] [2022-07-13 18:22:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:55,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:22:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:22:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:22:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:22:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:22:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:22:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:22:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:22:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:22:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:22:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:22:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:22:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:22:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:22:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:22:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:22:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:22:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-13 18:22:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 18:22:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-13 18:22:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-13 18:22:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-13 18:22:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-13 18:22:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-13 18:22:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-13 18:22:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-13 18:22:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-07-13 18:22:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-13 18:22:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-13 18:22:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-13 18:22:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-07-13 18:22:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-07-13 18:22:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-07-13 18:22:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-07-13 18:22:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-07-13 18:22:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2022-07-13 18:22:55,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:22:55,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420381960] [2022-07-13 18:22:55,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420381960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:22:55,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:22:55,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:22:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265961195] [2022-07-13 18:22:55,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:22:55,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:22:55,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:22:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:22:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:22:55,501 INFO L87 Difference]: Start difference. First operand 10174 states and 12691 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 18:22:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:22:57,655 INFO L93 Difference]: Finished difference Result 17459 states and 21823 transitions. [2022-07-13 18:22:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:22:57,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 412 [2022-07-13 18:22:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:22:57,671 INFO L225 Difference]: With dead ends: 17459 [2022-07-13 18:22:57,671 INFO L226 Difference]: Without dead ends: 7931 [2022-07-13 18:22:57,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:22:57,682 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 51 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:22:57,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 533 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:22:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7931 states. [2022-07-13 18:22:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7931 to 7931. [2022-07-13 18:22:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7931 states, 6440 states have (on average 1.2082298136645964) internal successors, (7781), 6512 states have internal predecessors, (7781), 1033 states have call successors, (1033), 457 states have call predecessors, (1033), 457 states have return successors, (1033), 961 states have call predecessors, (1033), 1033 states have call successors, (1033) [2022-07-13 18:22:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 9847 transitions. [2022-07-13 18:22:59,780 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 9847 transitions. Word has length 412 [2022-07-13 18:22:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:22:59,780 INFO L495 AbstractCegarLoop]: Abstraction has 7931 states and 9847 transitions. [2022-07-13 18:22:59,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 18:22:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 9847 transitions. [2022-07-13 18:22:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-07-13 18:22:59,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:22:59,793 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 11, 9, 8, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:22:59,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-13 18:22:59,793 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:22:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:22:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1538530205, now seen corresponding path program 1 times [2022-07-13 18:22:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:22:59,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234523671] [2022-07-13 18:22:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:22:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:22:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:22:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:22:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:22:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:22:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:22:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:22:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:22:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:22:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:22:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:22:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:22:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:22:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:22:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:23:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:23:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:23:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:23:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:23:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-13 18:23:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:23:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-13 18:23:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 18:23:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-07-13 18:23:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-13 18:23:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-13 18:23:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-13 18:23:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-13 18:23:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-13 18:23:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-13 18:23:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-07-13 18:23:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-13 18:23:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-13 18:23:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-13 18:23:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-07-13 18:23:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-07-13 18:23:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-07-13 18:23:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-07-13 18:23:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-07-13 18:23:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2022-07-13 18:23:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234523671] [2022-07-13 18:23:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234523671] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:23:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627468239] [2022-07-13 18:23:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:23:00,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:23:00,080 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:23:00,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 18:23:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:00,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 18:23:00,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:23:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 187 proven. 368 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-07-13 18:23:00,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:23:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2022-07-13 18:23:00,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627468239] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:23:00,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:23:00,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 20 [2022-07-13 18:23:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738964861] [2022-07-13 18:23:00,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:23:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 18:23:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 18:23:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:23:00,890 INFO L87 Difference]: Start difference. First operand 7931 states and 9847 transitions. Second operand has 20 states, 20 states have (on average 16.05) internal successors, (321), 17 states have internal predecessors, (321), 7 states have call successors, (79), 7 states have call predecessors, (79), 9 states have return successors, (78), 9 states have call predecessors, (78), 7 states have call successors, (78) [2022-07-13 18:23:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:13,028 INFO L93 Difference]: Finished difference Result 33536 states and 43180 transitions. [2022-07-13 18:23:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-13 18:23:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.05) internal successors, (321), 17 states have internal predecessors, (321), 7 states have call successors, (79), 7 states have call predecessors, (79), 9 states have return successors, (78), 9 states have call predecessors, (78), 7 states have call successors, (78) Word has length 415 [2022-07-13 18:23:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:13,078 INFO L225 Difference]: With dead ends: 33536 [2022-07-13 18:23:13,078 INFO L226 Difference]: Without dead ends: 26419 [2022-07-13 18:23:13,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 921 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=753, Invalid=6903, Unknown=0, NotChecked=0, Total=7656 [2022-07-13 18:23:13,090 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 2450 mSDsluCounter, 5284 mSDsCounter, 0 mSdLazyCounter, 4660 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 5773 SdHoareTripleChecker+Invalid, 5514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 4660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:13,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 5773 Invalid, 5514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [854 Valid, 4660 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 18:23:13,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26419 states. [2022-07-13 18:23:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26419 to 14551. [2022-07-13 18:23:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14551 states, 11848 states have (on average 1.200033760972316) internal successors, (14218), 11980 states have internal predecessors, (14218), 1847 states have call successors, (1847), 855 states have call predecessors, (1847), 855 states have return successors, (1847), 1715 states have call predecessors, (1847), 1847 states have call successors, (1847) [2022-07-13 18:23:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14551 states to 14551 states and 17912 transitions. [2022-07-13 18:23:16,736 INFO L78 Accepts]: Start accepts. Automaton has 14551 states and 17912 transitions. Word has length 415 [2022-07-13 18:23:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:16,736 INFO L495 AbstractCegarLoop]: Abstraction has 14551 states and 17912 transitions. [2022-07-13 18:23:16,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.05) internal successors, (321), 17 states have internal predecessors, (321), 7 states have call successors, (79), 7 states have call predecessors, (79), 9 states have return successors, (78), 9 states have call predecessors, (78), 7 states have call successors, (78) [2022-07-13 18:23:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 14551 states and 17912 transitions. [2022-07-13 18:23:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-13 18:23:16,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:16,747 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:23:16,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-13 18:23:16,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:23:16,962 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1565240785, now seen corresponding path program 1 times [2022-07-13 18:23:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:16,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664795434] [2022-07-13 18:23:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:23:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:23:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:23:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:23:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:23:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:23:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:23:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:23:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:23:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:23:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:23:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:23:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:23:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:23:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:23:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:23:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:23:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:23:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:23:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:23:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:23:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:23:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:23:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:23:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:23:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:23:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-13 18:23:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:23:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-13 18:23:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:23:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-13 18:23:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-07-13 18:23:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-07-13 18:23:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-07-13 18:23:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-07-13 18:23:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-07-13 18:23:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-07-13 18:23:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2022-07-13 18:23:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:17,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664795434] [2022-07-13 18:23:17,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664795434] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:23:17,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29637953] [2022-07-13 18:23:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:17,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:23:17,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:23:17,112 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:23:17,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 18:23:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:17,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 18:23:17,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:23:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-07-13 18:23:17,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:23:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29637953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:17,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:23:17,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 18:23:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712108866] [2022-07-13 18:23:17,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:17,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:23:17,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:23:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:23:17,402 INFO L87 Difference]: Start difference. First operand 14551 states and 17912 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 18:23:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:25,312 INFO L93 Difference]: Finished difference Result 29874 states and 37923 transitions. [2022-07-13 18:23:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 18:23:25,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 420 [2022-07-13 18:23:25,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:25,357 INFO L225 Difference]: With dead ends: 29874 [2022-07-13 18:23:25,357 INFO L226 Difference]: Without dead ends: 21701 [2022-07-13 18:23:25,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:23:25,369 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 937 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:25,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 3357 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:23:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21701 states. [2022-07-13 18:23:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21701 to 14263. [2022-07-13 18:23:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14263 states, 11620 states have (on average 1.1881239242685027) internal successors, (13806), 11748 states have internal predecessors, (13806), 1787 states have call successors, (1787), 855 states have call predecessors, (1787), 855 states have return successors, (1787), 1659 states have call predecessors, (1787), 1787 states have call successors, (1787) [2022-07-13 18:23:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 17380 transitions. [2022-07-13 18:23:29,033 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 17380 transitions. Word has length 420 [2022-07-13 18:23:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:29,034 INFO L495 AbstractCegarLoop]: Abstraction has 14263 states and 17380 transitions. [2022-07-13 18:23:29,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 states have internal predecessors, (159), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-13 18:23:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 17380 transitions. [2022-07-13 18:23:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-13 18:23:29,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:29,045 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 18:23:29,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-13 18:23:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-07-13 18:23:29,260 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:29,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1039041525, now seen corresponding path program 1 times [2022-07-13 18:23:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:29,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228770905] [2022-07-13 18:23:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:23:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:23:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:23:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:23:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:23:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 18:23:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 18:23:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 18:23:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 18:23:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 18:23:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:23:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 18:23:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 18:23:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 18:23:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:23:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 18:23:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 18:23:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 18:23:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-13 18:23:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-13 18:23:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-13 18:23:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 18:23:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-13 18:23:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-13 18:23:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-13 18:23:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-13 18:23:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-07-13 18:23:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-13 18:23:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-13 18:23:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-13 18:23:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-13 18:23:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-13 18:23:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-07-13 18:23:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-13 18:23:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-07-13 18:23:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-07-13 18:23:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-13 18:23:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2022-07-13 18:23:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:29,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228770905] [2022-07-13 18:23:29,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228770905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:29,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:29,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:23:29,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067907550] [2022-07-13 18:23:29,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:29,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:23:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:23:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:23:29,370 INFO L87 Difference]: Start difference. First operand 14263 states and 17380 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 8 states have internal predecessors, (140), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26)