/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:33:35,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:33:35,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:33:35,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:33:35,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:33:35,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:33:35,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:33:35,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:33:35,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:33:35,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:33:35,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:33:35,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:33:35,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:33:35,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:33:35,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:33:35,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:33:35,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:33:35,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:33:35,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:33:35,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:33:35,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:33:35,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:33:35,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:33:35,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:33:35,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:33:35,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:33:35,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:33:35,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:33:35,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:33:35,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:33:35,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:33:35,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:33:35,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:33:35,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:33:35,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:33:35,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:33:35,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:33:35,803 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:33:35,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:33:35,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:33:35,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:33:35,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:33:35,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:33:35,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:33:35,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:33:35,806 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:33:35,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:33:35,806 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:33:35,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:33:35,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:33:35,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:33:35,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:33:35,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:33:35,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:33:35,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:33:35,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:33:35,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:33:35,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:33:35,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:33:35,808 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:33:35,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:33:35,809 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:33:35,809 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:33:35,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:33:35,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:33:35,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:33:35,995 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:33:35,995 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:33:35,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:33:36,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:33:37,168 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:33:37,168 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:33:37,179 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905c1c0ef/0d11bad3fd074166ac5fa437051e6a12/FLAGc55cf9d76 [2023-04-02 06:33:37,191 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905c1c0ef/0d11bad3fd074166ac5fa437051e6a12 [2023-04-02 06:33:37,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:33:37,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:33:37,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:33:37,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:33:37,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:33:37,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e07d39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37, skipping insertion in model container [2023-04-02 06:33:37,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:33:37,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:33:37,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2023-04-02 06:33:37,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:33:37,439 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:33:37,477 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2023-04-02 06:33:37,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:33:37,525 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:33:37,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37 WrapperNode [2023-04-02 06:33:37,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:33:37,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:33:37,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:33:37,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:33:37,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,572 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:33:37,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:33:37,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:33:37,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:33:37,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (1/1) ... [2023-04-02 06:33:37,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:33:37,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:33:37,611 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) [2023-04-02 06:33:37,614 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 [2023-04-02 06:33:37,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:33:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:33:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:33:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:33:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:33:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:33:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:33:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:33:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:33:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:33:37,742 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:33:37,743 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:33:38,281 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:33:38,289 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:33:38,289 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:33:38,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:33:38 BoogieIcfgContainer [2023-04-02 06:33:38,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:33:38,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:33:38,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:33:38,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:33:38,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:33:37" (1/3) ... [2023-04-02 06:33:38,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6762d5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:33:38, skipping insertion in model container [2023-04-02 06:33:38,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:33:37" (2/3) ... [2023-04-02 06:33:38,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6762d5ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:33:38, skipping insertion in model container [2023-04-02 06:33:38,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:33:38" (3/3) ... [2023-04-02 06:33:38,299 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:33:38,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:33:38,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:33:38,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:33:38,362 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d153c43, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:33:38,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:33:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 148 states have (on average 1.75) internal successors, (259), 150 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:33:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:33:38,374 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:38,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:38,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:38,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:38,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1430393227, now seen corresponding path program 1 times [2023-04-02 06:33:38,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:38,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562551502] [2023-04-02 06:33:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:38,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562551502] [2023-04-02 06:33:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562551502] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:39,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:39,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:33:39,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259639236] [2023-04-02 06:33:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:33:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:33:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:33:39,195 INFO L87 Difference]: Start difference. First operand has 155 states, 148 states have (on average 1.75) internal successors, (259), 150 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:40,574 INFO L93 Difference]: Finished difference Result 854 states and 1356 transitions. [2023-04-02 06:33:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:33:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-04-02 06:33:40,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:40,593 INFO L225 Difference]: With dead ends: 854 [2023-04-02 06:33:40,593 INFO L226 Difference]: Without dead ends: 744 [2023-04-02 06:33:40,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:33:40,601 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1437 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:40,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2389 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:33:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-04-02 06:33:40,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 228. [2023-04-02 06:33:40,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 224 states have (on average 1.4508928571428572) internal successors, (325), 224 states have internal predecessors, (325), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2023-04-02 06:33:40,665 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 79 [2023-04-02 06:33:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:40,666 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2023-04-02 06:33:40,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2023-04-02 06:33:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:33:40,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:40,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:40,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:33:40,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:40,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2085781529, now seen corresponding path program 1 times [2023-04-02 06:33:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:40,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881341904] [2023-04-02 06:33:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881341904] [2023-04-02 06:33:41,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881341904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:41,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:33:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991123984] [2023-04-02 06:33:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:33:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:33:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:33:41,039 INFO L87 Difference]: Start difference. First operand 228 states and 328 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:42,102 INFO L93 Difference]: Finished difference Result 912 states and 1403 transitions. [2023-04-02 06:33:42,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:33:42,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:33:42,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:42,107 INFO L225 Difference]: With dead ends: 912 [2023-04-02 06:33:42,107 INFO L226 Difference]: Without dead ends: 794 [2023-04-02 06:33:42,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:33:42,109 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 909 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:42,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1354 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:33:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-04-02 06:33:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 286. [2023-04-02 06:33:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.4787234042553192) internal successors, (417), 282 states have internal predecessors, (417), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 420 transitions. [2023-04-02 06:33:42,153 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 420 transitions. Word has length 81 [2023-04-02 06:33:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:42,154 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 420 transitions. [2023-04-02 06:33:42,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 420 transitions. [2023-04-02 06:33:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:33:42,155 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:42,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:42,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:33:42,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:42,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1939507288, now seen corresponding path program 1 times [2023-04-02 06:33:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:42,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434517360] [2023-04-02 06:33:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434517360] [2023-04-02 06:33:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434517360] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:42,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:42,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:33:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221394421] [2023-04-02 06:33:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:42,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:33:42,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:33:42,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:33:42,436 INFO L87 Difference]: Start difference. First operand 286 states and 420 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:43,154 INFO L93 Difference]: Finished difference Result 981 states and 1512 transitions. [2023-04-02 06:33:43,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:33:43,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:33:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:43,158 INFO L225 Difference]: With dead ends: 981 [2023-04-02 06:33:43,158 INFO L226 Difference]: Without dead ends: 863 [2023-04-02 06:33:43,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:33:43,160 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1085 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:43,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1271 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:33:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-04-02 06:33:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 429. [2023-04-02 06:33:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.5129411764705882) internal successors, (643), 425 states have internal predecessors, (643), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:43,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 646 transitions. [2023-04-02 06:33:43,195 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 646 transitions. Word has length 81 [2023-04-02 06:33:43,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:43,195 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 646 transitions. [2023-04-02 06:33:43,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:43,196 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 646 transitions. [2023-04-02 06:33:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:33:43,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:43,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:43,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:33:43,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:43,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1882801346, now seen corresponding path program 1 times [2023-04-02 06:33:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:43,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692222926] [2023-04-02 06:33:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:43,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:43,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692222926] [2023-04-02 06:33:43,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692222926] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:43,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:43,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:33:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843647654] [2023-04-02 06:33:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:43,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:33:43,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:33:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:33:43,456 INFO L87 Difference]: Start difference. First operand 429 states and 646 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:44,102 INFO L93 Difference]: Finished difference Result 1045 states and 1613 transitions. [2023-04-02 06:33:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:33:44,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:33:44,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:44,106 INFO L225 Difference]: With dead ends: 1045 [2023-04-02 06:33:44,106 INFO L226 Difference]: Without dead ends: 927 [2023-04-02 06:33:44,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:33:44,107 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1253 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:44,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1275 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:33:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2023-04-02 06:33:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 488. [2023-04-02 06:33:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 484 states have (on average 1.5206611570247934) internal successors, (736), 484 states have internal predecessors, (736), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 739 transitions. [2023-04-02 06:33:44,144 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 739 transitions. Word has length 81 [2023-04-02 06:33:44,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:44,144 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 739 transitions. [2023-04-02 06:33:44,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 739 transitions. [2023-04-02 06:33:44,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:33:44,145 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:44,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:44,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:33:44,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:44,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1867074996, now seen corresponding path program 1 times [2023-04-02 06:33:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:44,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469570619] [2023-04-02 06:33:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:44,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:44,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:44,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469570619] [2023-04-02 06:33:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469570619] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:44,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:44,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:33:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575172337] [2023-04-02 06:33:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:44,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:33:44,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:33:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:33:44,305 INFO L87 Difference]: Start difference. First operand 488 states and 739 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:44,629 INFO L93 Difference]: Finished difference Result 843 states and 1298 transitions. [2023-04-02 06:33:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:33:44,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:33:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:44,632 INFO L225 Difference]: With dead ends: 843 [2023-04-02 06:33:44,632 INFO L226 Difference]: Without dead ends: 487 [2023-04-02 06:33:44,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:33:44,633 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:44,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 394 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:33:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-04-02 06:33:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2023-04-02 06:33:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 483 states have (on average 1.5093167701863355) internal successors, (729), 483 states have internal predecessors, (729), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 732 transitions. [2023-04-02 06:33:44,673 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 732 transitions. Word has length 81 [2023-04-02 06:33:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:44,673 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 732 transitions. [2023-04-02 06:33:44,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 732 transitions. [2023-04-02 06:33:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:33:44,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:44,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:44,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:33:44,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:44,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2073973491, now seen corresponding path program 1 times [2023-04-02 06:33:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344192369] [2023-04-02 06:33:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:44,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344192369] [2023-04-02 06:33:44,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344192369] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:44,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:44,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:33:44,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102256588] [2023-04-02 06:33:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:44,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:33:44,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:33:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:33:44,974 INFO L87 Difference]: Start difference. First operand 487 states and 732 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:45,616 INFO L93 Difference]: Finished difference Result 1009 states and 1550 transitions. [2023-04-02 06:33:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:33:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:33:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:45,619 INFO L225 Difference]: With dead ends: 1009 [2023-04-02 06:33:45,619 INFO L226 Difference]: Without dead ends: 660 [2023-04-02 06:33:45,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:33:45,621 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 596 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:45,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 760 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:33:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-04-02 06:33:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 658. [2023-04-02 06:33:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 654 states have (on average 1.5198776758409787) internal successors, (994), 654 states have internal predecessors, (994), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 997 transitions. [2023-04-02 06:33:45,675 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 997 transitions. Word has length 81 [2023-04-02 06:33:45,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:45,675 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 997 transitions. [2023-04-02 06:33:45,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 997 transitions. [2023-04-02 06:33:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:33:45,676 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:45,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:45,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:33:45,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:45,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash 906587901, now seen corresponding path program 1 times [2023-04-02 06:33:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:45,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855430413] [2023-04-02 06:33:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:45,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855430413] [2023-04-02 06:33:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855430413] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:33:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362065976] [2023-04-02 06:33:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:45,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:33:45,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:33:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:33:45,878 INFO L87 Difference]: Start difference. First operand 658 states and 997 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:46,612 INFO L93 Difference]: Finished difference Result 1269 states and 1944 transitions. [2023-04-02 06:33:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:33:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:33:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:46,616 INFO L225 Difference]: With dead ends: 1269 [2023-04-02 06:33:46,616 INFO L226 Difference]: Without dead ends: 1152 [2023-04-02 06:33:46,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:33:46,617 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1065 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:46,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1683 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:33:46,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-04-02 06:33:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 779. [2023-04-02 06:33:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 775 states have (on average 1.5264516129032257) internal successors, (1183), 775 states have internal predecessors, (1183), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1186 transitions. [2023-04-02 06:33:46,702 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1186 transitions. Word has length 81 [2023-04-02 06:33:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:46,702 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1186 transitions. [2023-04-02 06:33:46,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1186 transitions. [2023-04-02 06:33:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:33:46,703 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:46,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:46,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:33:46,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:46,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:46,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1269394158, now seen corresponding path program 1 times [2023-04-02 06:33:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:46,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961032147] [2023-04-02 06:33:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:46,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:46,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961032147] [2023-04-02 06:33:46,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961032147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:46,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:46,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:33:46,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390153576] [2023-04-02 06:33:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:46,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:33:46,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:33:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:33:46,912 INFO L87 Difference]: Start difference. First operand 779 states and 1186 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:47,595 INFO L93 Difference]: Finished difference Result 1400 states and 2149 transitions. [2023-04-02 06:33:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:33:47,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:33:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:47,599 INFO L225 Difference]: With dead ends: 1400 [2023-04-02 06:33:47,599 INFO L226 Difference]: Without dead ends: 1283 [2023-04-02 06:33:47,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:33:47,600 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1155 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1461 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:33:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-04-02 06:33:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 910. [2023-04-02 06:33:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 1.532008830022075) internal successors, (1388), 906 states have internal predecessors, (1388), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1391 transitions. [2023-04-02 06:33:47,681 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1391 transitions. Word has length 81 [2023-04-02 06:33:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:47,681 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1391 transitions. [2023-04-02 06:33:47,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1391 transitions. [2023-04-02 06:33:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:33:47,682 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:47,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:47,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:33:47,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:47,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:47,683 INFO L85 PathProgramCache]: Analyzing trace with hash -133240505, now seen corresponding path program 1 times [2023-04-02 06:33:47,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:47,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228968066] [2023-04-02 06:33:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:47,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:47,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:47,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228968066] [2023-04-02 06:33:47,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228968066] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:47,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:47,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:33:47,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019094726] [2023-04-02 06:33:47,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:47,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:33:47,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:47,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:33:47,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:33:47,889 INFO L87 Difference]: Start difference. First operand 910 states and 1391 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:48,535 INFO L93 Difference]: Finished difference Result 2595 states and 4014 transitions. [2023-04-02 06:33:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:33:48,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-02 06:33:48,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:48,542 INFO L225 Difference]: With dead ends: 2595 [2023-04-02 06:33:48,542 INFO L226 Difference]: Without dead ends: 1726 [2023-04-02 06:33:48,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:33:48,546 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 795 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:48,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 178 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:33:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-04-02 06:33:48,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-04-02 06:33:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.538953488372093) internal successors, (2647), 1720 states have internal predecessors, (2647), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2650 transitions. [2023-04-02 06:33:48,744 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2650 transitions. Word has length 82 [2023-04-02 06:33:48,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:48,744 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2650 transitions. [2023-04-02 06:33:48,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2650 transitions. [2023-04-02 06:33:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:33:48,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:48,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:48,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:33:48,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:48,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash -935919318, now seen corresponding path program 1 times [2023-04-02 06:33:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154990226] [2023-04-02 06:33:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:48,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:48,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154990226] [2023-04-02 06:33:48,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154990226] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:48,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:48,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:33:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17733427] [2023-04-02 06:33:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:48,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:33:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:48,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:33:48,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:33:48,946 INFO L87 Difference]: Start difference. First operand 1724 states and 2650 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:49,514 INFO L93 Difference]: Finished difference Result 3403 states and 5254 transitions. [2023-04-02 06:33:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:33:49,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-02 06:33:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:49,520 INFO L225 Difference]: With dead ends: 3403 [2023-04-02 06:33:49,520 INFO L226 Difference]: Without dead ends: 1724 [2023-04-02 06:33:49,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:33:49,524 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 530 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:49,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 121 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:33:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2023-04-02 06:33:49,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2023-04-02 06:33:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.5232558139534884) internal successors, (2620), 1720 states have internal predecessors, (2620), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2623 transitions. [2023-04-02 06:33:49,702 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2623 transitions. Word has length 83 [2023-04-02 06:33:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:49,702 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2623 transitions. [2023-04-02 06:33:49,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:49,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2623 transitions. [2023-04-02 06:33:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:33:49,705 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:49,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:49,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:33:49,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:49,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1411708630, now seen corresponding path program 1 times [2023-04-02 06:33:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:49,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506654876] [2023-04-02 06:33:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:49,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:49,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506654876] [2023-04-02 06:33:49,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506654876] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:49,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:49,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:33:49,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125751325] [2023-04-02 06:33:49,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:49,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:33:49,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:49,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:33:49,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:33:49,921 INFO L87 Difference]: Start difference. First operand 1724 states and 2623 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:50,540 INFO L93 Difference]: Finished difference Result 3399 states and 5196 transitions. [2023-04-02 06:33:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:33:50,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-02 06:33:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:50,547 INFO L225 Difference]: With dead ends: 3399 [2023-04-02 06:33:50,547 INFO L226 Difference]: Without dead ends: 1724 [2023-04-02 06:33:50,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:33:50,551 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 512 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:50,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 129 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:33:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2023-04-02 06:33:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2023-04-02 06:33:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.5075581395348838) internal successors, (2593), 1720 states have internal predecessors, (2593), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2596 transitions. [2023-04-02 06:33:50,758 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2596 transitions. Word has length 84 [2023-04-02 06:33:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:50,758 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2596 transitions. [2023-04-02 06:33:50,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2596 transitions. [2023-04-02 06:33:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:33:50,759 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:50,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:50,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:33:50,759 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:50,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1066904411, now seen corresponding path program 1 times [2023-04-02 06:33:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313498726] [2023-04-02 06:33:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:50,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:50,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313498726] [2023-04-02 06:33:50,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313498726] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:50,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:50,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:33:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707968736] [2023-04-02 06:33:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:50,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:33:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:33:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:33:50,934 INFO L87 Difference]: Start difference. First operand 1724 states and 2596 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:51,486 INFO L93 Difference]: Finished difference Result 3395 states and 5138 transitions. [2023-04-02 06:33:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:33:51,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-02 06:33:51,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:51,491 INFO L225 Difference]: With dead ends: 3395 [2023-04-02 06:33:51,491 INFO L226 Difference]: Without dead ends: 1724 [2023-04-02 06:33:51,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:33:51,494 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 494 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:51,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 137 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:33:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2023-04-02 06:33:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2023-04-02 06:33:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.491860465116279) internal successors, (2566), 1720 states have internal predecessors, (2566), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2569 transitions. [2023-04-02 06:33:51,691 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2569 transitions. Word has length 85 [2023-04-02 06:33:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:51,691 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2569 transitions. [2023-04-02 06:33:51,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2569 transitions. [2023-04-02 06:33:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 06:33:51,692 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:51,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:51,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:33:51,692 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:51,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1496479515, now seen corresponding path program 1 times [2023-04-02 06:33:51,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:51,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549694886] [2023-04-02 06:33:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:51,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549694886] [2023-04-02 06:33:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549694886] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:51,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:51,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:33:51,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428683599] [2023-04-02 06:33:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:51,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:33:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:33:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:33:51,870 INFO L87 Difference]: Start difference. First operand 1724 states and 2569 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:52,511 INFO L93 Difference]: Finished difference Result 3391 states and 5080 transitions. [2023-04-02 06:33:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:33:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-02 06:33:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:52,517 INFO L225 Difference]: With dead ends: 3391 [2023-04-02 06:33:52,518 INFO L226 Difference]: Without dead ends: 1724 [2023-04-02 06:33:52,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:33:52,521 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 476 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:52,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 145 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:33:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2023-04-02 06:33:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2023-04-02 06:33:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.4761627906976744) internal successors, (2539), 1720 states have internal predecessors, (2539), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2542 transitions. [2023-04-02 06:33:52,731 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2542 transitions. Word has length 86 [2023-04-02 06:33:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:52,731 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2542 transitions. [2023-04-02 06:33:52,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2542 transitions. [2023-04-02 06:33:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:33:52,732 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:52,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:52,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:33:52,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:52,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1865160436, now seen corresponding path program 1 times [2023-04-02 06:33:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51009021] [2023-04-02 06:33:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:52,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:52,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51009021] [2023-04-02 06:33:52,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51009021] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:52,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:33:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379892066] [2023-04-02 06:33:52,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:33:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:33:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:33:52,996 INFO L87 Difference]: Start difference. First operand 1724 states and 2542 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:53,555 INFO L93 Difference]: Finished difference Result 2114 states and 3085 transitions. [2023-04-02 06:33:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:33:53,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2023-04-02 06:33:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:53,561 INFO L225 Difference]: With dead ends: 2114 [2023-04-02 06:33:53,561 INFO L226 Difference]: Without dead ends: 2112 [2023-04-02 06:33:53,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:33:53,562 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 166 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:53,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 766 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:33:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2023-04-02 06:33:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1724. [2023-04-02 06:33:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.4680232558139534) internal successors, (2525), 1720 states have internal predecessors, (2525), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2528 transitions. [2023-04-02 06:33:53,800 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2528 transitions. Word has length 87 [2023-04-02 06:33:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:53,801 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2528 transitions. [2023-04-02 06:33:53,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2528 transitions. [2023-04-02 06:33:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:33:53,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:53,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:53,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:33:53,802 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:53,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:53,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1321631269, now seen corresponding path program 1 times [2023-04-02 06:33:53,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:53,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417863036] [2023-04-02 06:33:53,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:54,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:54,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:54,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417863036] [2023-04-02 06:33:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417863036] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:54,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:54,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:33:54,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970471678] [2023-04-02 06:33:54,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:54,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:33:54,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:33:54,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:33:54,254 INFO L87 Difference]: Start difference. First operand 1724 states and 2528 transitions. Second operand has 14 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:55,484 INFO L93 Difference]: Finished difference Result 4914 states and 7218 transitions. [2023-04-02 06:33:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:33:55,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2023-04-02 06:33:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:55,493 INFO L225 Difference]: With dead ends: 4914 [2023-04-02 06:33:55,493 INFO L226 Difference]: Without dead ends: 3360 [2023-04-02 06:33:55,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:33:55,496 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1043 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:55,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 434 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:33:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2023-04-02 06:33:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 1724. [2023-04-02 06:33:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.4627906976744185) internal successors, (2516), 1720 states have internal predecessors, (2516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2519 transitions. [2023-04-02 06:33:55,791 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2519 transitions. Word has length 88 [2023-04-02 06:33:55,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:55,791 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2519 transitions. [2023-04-02 06:33:55,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2519 transitions. [2023-04-02 06:33:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:33:55,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:55,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:55,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:33:55,792 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:55,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash 288711882, now seen corresponding path program 1 times [2023-04-02 06:33:55,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:55,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065498804] [2023-04-02 06:33:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:55,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:56,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:56,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065498804] [2023-04-02 06:33:56,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065498804] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:56,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:33:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653150319] [2023-04-02 06:33:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:56,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:33:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:33:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:33:56,116 INFO L87 Difference]: Start difference. First operand 1724 states and 2519 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:57,293 INFO L93 Difference]: Finished difference Result 4797 states and 7052 transitions. [2023-04-02 06:33:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:33:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2023-04-02 06:33:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:57,302 INFO L225 Difference]: With dead ends: 4797 [2023-04-02 06:33:57,303 INFO L226 Difference]: Without dead ends: 3233 [2023-04-02 06:33:57,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:33:57,305 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 864 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:57,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 322 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:33:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2023-04-02 06:33:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 1724. [2023-04-02 06:33:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.4622093023255813) internal successors, (2515), 1720 states have internal predecessors, (2515), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2518 transitions. [2023-04-02 06:33:57,633 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2518 transitions. Word has length 88 [2023-04-02 06:33:57,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:57,633 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2518 transitions. [2023-04-02 06:33:57,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:33:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2518 transitions. [2023-04-02 06:33:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-02 06:33:57,634 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:57,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:33:57,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:33:57,634 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:33:57,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash -907892207, now seen corresponding path program 1 times [2023-04-02 06:33:57,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:57,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869954567] [2023-04-02 06:33:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:57,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:33:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869954567] [2023-04-02 06:33:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869954567] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:58,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:58,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:33:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791211640] [2023-04-02 06:33:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:58,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:33:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:33:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:33:58,072 INFO L87 Difference]: Start difference. First operand 1724 states and 2518 transitions. Second operand has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:00,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:00,788 INFO L93 Difference]: Finished difference Result 8151 states and 11864 transitions. [2023-04-02 06:34:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:34:00,788 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2023-04-02 06:34:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:00,802 INFO L225 Difference]: With dead ends: 8151 [2023-04-02 06:34:00,802 INFO L226 Difference]: Without dead ends: 6644 [2023-04-02 06:34:00,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:34:00,805 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1443 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:00,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 899 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:34:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6644 states. [2023-04-02 06:34:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6644 to 1796. [2023-04-02 06:34:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1792 states have (on average 1.4553571428571428) internal successors, (2608), 1792 states have internal predecessors, (2608), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2611 transitions. [2023-04-02 06:34:01,224 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2611 transitions. Word has length 88 [2023-04-02 06:34:01,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:01,225 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2611 transitions. [2023-04-02 06:34:01,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2611 transitions. [2023-04-02 06:34:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:34:01,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:01,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:01,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:34:01,226 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:01,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1048184262, now seen corresponding path program 1 times [2023-04-02 06:34:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:01,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401915480] [2023-04-02 06:34:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:01,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:01,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401915480] [2023-04-02 06:34:01,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401915480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:01,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:01,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:34:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492424201] [2023-04-02 06:34:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:01,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:34:01,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:34:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:34:01,551 INFO L87 Difference]: Start difference. First operand 1796 states and 2611 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:03,079 INFO L93 Difference]: Finished difference Result 4929 states and 7199 transitions. [2023-04-02 06:34:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:34:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2023-04-02 06:34:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:03,085 INFO L225 Difference]: With dead ends: 4929 [2023-04-02 06:34:03,085 INFO L226 Difference]: Without dead ends: 3420 [2023-04-02 06:34:03,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:34:03,088 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1343 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:03,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 399 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:34:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2023-04-02 06:34:03,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 1724. [2023-04-02 06:34:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.455813953488372) internal successors, (2504), 1720 states have internal predecessors, (2504), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2507 transitions. [2023-04-02 06:34:03,489 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2507 transitions. Word has length 89 [2023-04-02 06:34:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:03,489 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2507 transitions. [2023-04-02 06:34:03,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2507 transitions. [2023-04-02 06:34:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 06:34:03,490 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:03,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:34:03,490 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:03,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2033036907, now seen corresponding path program 1 times [2023-04-02 06:34:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968639240] [2023-04-02 06:34:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968639240] [2023-04-02 06:34:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968639240] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:03,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:03,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:34:03,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668865935] [2023-04-02 06:34:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:34:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:34:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:34:03,776 INFO L87 Difference]: Start difference. First operand 1724 states and 2507 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:05,286 INFO L93 Difference]: Finished difference Result 3609 states and 5257 transitions. [2023-04-02 06:34:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:34:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2023-04-02 06:34:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:05,291 INFO L225 Difference]: With dead ends: 3609 [2023-04-02 06:34:05,291 INFO L226 Difference]: Without dead ends: 2010 [2023-04-02 06:34:05,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:34:05,294 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 846 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:05,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 545 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:34:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2023-04-02 06:34:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1724. [2023-04-02 06:34:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.4540697674418606) internal successors, (2501), 1720 states have internal predecessors, (2501), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2504 transitions. [2023-04-02 06:34:05,758 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2504 transitions. Word has length 89 [2023-04-02 06:34:05,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:05,758 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2504 transitions. [2023-04-02 06:34:05,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:05,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2504 transitions. [2023-04-02 06:34:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 06:34:05,759 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:05,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:05,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:34:05,759 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:05,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1398579957, now seen corresponding path program 1 times [2023-04-02 06:34:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855739974] [2023-04-02 06:34:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:06,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855739974] [2023-04-02 06:34:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855739974] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:06,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:06,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:34:06,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890868775] [2023-04-02 06:34:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:06,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:34:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:34:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:34:06,078 INFO L87 Difference]: Start difference. First operand 1724 states and 2504 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:08,028 INFO L93 Difference]: Finished difference Result 4959 states and 7236 transitions. [2023-04-02 06:34:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:34:08,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2023-04-02 06:34:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:08,034 INFO L225 Difference]: With dead ends: 4959 [2023-04-02 06:34:08,034 INFO L226 Difference]: Without dead ends: 3375 [2023-04-02 06:34:08,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:34:08,036 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1425 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:08,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 411 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:34:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2023-04-02 06:34:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1724. [2023-04-02 06:34:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1720 states have (on average 1.4505813953488371) internal successors, (2495), 1720 states have internal predecessors, (2495), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2498 transitions. [2023-04-02 06:34:08,554 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2498 transitions. Word has length 90 [2023-04-02 06:34:08,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:08,555 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2498 transitions. [2023-04-02 06:34:08,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:08,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2498 transitions. [2023-04-02 06:34:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:34:08,556 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:08,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:08,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:34:08,556 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:08,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1304048823, now seen corresponding path program 1 times [2023-04-02 06:34:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:08,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811493842] [2023-04-02 06:34:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:09,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:09,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811493842] [2023-04-02 06:34:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811493842] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:09,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:09,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:34:09,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539610768] [2023-04-02 06:34:09,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:09,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:34:09,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:34:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:34:09,110 INFO L87 Difference]: Start difference. First operand 1724 states and 2498 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:12,381 INFO L93 Difference]: Finished difference Result 4278 states and 6249 transitions. [2023-04-02 06:34:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:34:12,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-04-02 06:34:12,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:12,401 INFO L225 Difference]: With dead ends: 4278 [2023-04-02 06:34:12,401 INFO L226 Difference]: Without dead ends: 3757 [2023-04-02 06:34:12,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:34:12,403 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1193 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:12,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 2451 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:34:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2023-04-02 06:34:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 1682. [2023-04-02 06:34:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1678 states have (on average 1.4505363528009536) internal successors, (2434), 1678 states have internal predecessors, (2434), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2437 transitions. [2023-04-02 06:34:13,033 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2437 transitions. Word has length 91 [2023-04-02 06:34:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:13,034 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 2437 transitions. [2023-04-02 06:34:13,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2437 transitions. [2023-04-02 06:34:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:34:13,035 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:13,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:13,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:34:13,035 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:13,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1233640757, now seen corresponding path program 1 times [2023-04-02 06:34:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:13,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142080712] [2023-04-02 06:34:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:13,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:13,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142080712] [2023-04-02 06:34:13,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142080712] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:13,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:13,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:34:13,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294328967] [2023-04-02 06:34:13,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:34:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:34:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:34:13,599 INFO L87 Difference]: Start difference. First operand 1682 states and 2437 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:17,658 INFO L93 Difference]: Finished difference Result 6691 states and 9821 transitions. [2023-04-02 06:34:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:34:17,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-04-02 06:34:17,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:17,669 INFO L225 Difference]: With dead ends: 6691 [2023-04-02 06:34:17,669 INFO L226 Difference]: Without dead ends: 6225 [2023-04-02 06:34:17,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:34:17,672 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1386 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:17,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1481 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:34:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6225 states. [2023-04-02 06:34:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6225 to 1680. [2023-04-02 06:34:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1676 states have (on average 1.4457040572792363) internal successors, (2423), 1676 states have internal predecessors, (2423), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2426 transitions. [2023-04-02 06:34:18,485 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2426 transitions. Word has length 91 [2023-04-02 06:34:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:18,485 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2426 transitions. [2023-04-02 06:34:18,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2426 transitions. [2023-04-02 06:34:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:34:18,496 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:18,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:18,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:34:18,496 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:18,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash 876425067, now seen corresponding path program 1 times [2023-04-02 06:34:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:18,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393990340] [2023-04-02 06:34:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:18,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:18,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:19,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393990340] [2023-04-02 06:34:19,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393990340] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:19,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:19,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:34:19,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694800148] [2023-04-02 06:34:19,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:19,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:34:19,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:34:19,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:34:19,008 INFO L87 Difference]: Start difference. First operand 1680 states and 2426 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:23,949 INFO L93 Difference]: Finished difference Result 6810 states and 9962 transitions. [2023-04-02 06:34:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:34:23,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-04-02 06:34:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:23,957 INFO L225 Difference]: With dead ends: 6810 [2023-04-02 06:34:23,958 INFO L226 Difference]: Without dead ends: 6309 [2023-04-02 06:34:23,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:34:23,959 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1018 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:23,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 2116 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:34:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2023-04-02 06:34:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 1647. [2023-04-02 06:34:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1643 states have (on average 1.4473524041387706) internal successors, (2378), 1643 states have internal predecessors, (2378), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2381 transitions. [2023-04-02 06:34:24,843 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2381 transitions. Word has length 91 [2023-04-02 06:34:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:24,843 INFO L495 AbstractCegarLoop]: Abstraction has 1647 states and 2381 transitions. [2023-04-02 06:34:24,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2381 transitions. [2023-04-02 06:34:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:34:24,844 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:24,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:24,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:34:24,844 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:24,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:24,845 INFO L85 PathProgramCache]: Analyzing trace with hash 756484329, now seen corresponding path program 1 times [2023-04-02 06:34:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:24,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272259854] [2023-04-02 06:34:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:24,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:25,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:25,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272259854] [2023-04-02 06:34:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272259854] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:25,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:25,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 06:34:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470446692] [2023-04-02 06:34:25,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:25,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 06:34:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 06:34:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-04-02 06:34:25,558 INFO L87 Difference]: Start difference. First operand 1647 states and 2381 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 17 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:30,137 INFO L93 Difference]: Finished difference Result 5023 states and 7355 transitions. [2023-04-02 06:34:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 06:34:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 17 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-04-02 06:34:30,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:30,142 INFO L225 Difference]: With dead ends: 5023 [2023-04-02 06:34:30,142 INFO L226 Difference]: Without dead ends: 4539 [2023-04-02 06:34:30,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:34:30,144 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1208 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 4132 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:30,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 4132 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:34:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2023-04-02 06:34:31,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 1647. [2023-04-02 06:34:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1643 states have (on average 1.446743761412051) internal successors, (2377), 1643 states have internal predecessors, (2377), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2380 transitions. [2023-04-02 06:34:31,114 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2380 transitions. Word has length 91 [2023-04-02 06:34:31,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:31,114 INFO L495 AbstractCegarLoop]: Abstraction has 1647 states and 2380 transitions. [2023-04-02 06:34:31,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 17 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2380 transitions. [2023-04-02 06:34:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:34:31,115 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:31,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:31,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:34:31,115 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:31,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1393960752, now seen corresponding path program 1 times [2023-04-02 06:34:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:31,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661985554] [2023-04-02 06:34:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:32,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:32,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661985554] [2023-04-02 06:34:32,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661985554] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:32,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:32,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-02 06:34:32,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597310486] [2023-04-02 06:34:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:32,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-02 06:34:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-02 06:34:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:34:32,463 INFO L87 Difference]: Start difference. First operand 1647 states and 2380 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:42,053 INFO L93 Difference]: Finished difference Result 7393 states and 10827 transitions. [2023-04-02 06:34:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-02 06:34:42,054 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2023-04-02 06:34:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:42,060 INFO L225 Difference]: With dead ends: 7393 [2023-04-02 06:34:42,060 INFO L226 Difference]: Without dead ends: 5893 [2023-04-02 06:34:42,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=562, Invalid=3220, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 06:34:42,063 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1634 mSDsluCounter, 7658 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 8032 SdHoareTripleChecker+Invalid, 6081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:42,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 8032 Invalid, 6081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 06:34:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2023-04-02 06:34:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 1664. [2023-04-02 06:34:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1660 states have (on average 1.443975903614458) internal successors, (2397), 1660 states have internal predecessors, (2397), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2400 transitions. [2023-04-02 06:34:43,168 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2400 transitions. Word has length 92 [2023-04-02 06:34:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:43,169 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2400 transitions. [2023-04-02 06:34:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2400 transitions. [2023-04-02 06:34:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:34:43,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:43,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:34:43,170 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:43,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1109051855, now seen corresponding path program 1 times [2023-04-02 06:34:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302041832] [2023-04-02 06:34:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:43,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302041832] [2023-04-02 06:34:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302041832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:43,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:43,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:34:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517426237] [2023-04-02 06:34:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:34:43,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:34:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:34:43,630 INFO L87 Difference]: Start difference. First operand 1664 states and 2400 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:34:49,520 INFO L93 Difference]: Finished difference Result 6624 states and 9723 transitions. [2023-04-02 06:34:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:34:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2023-04-02 06:34:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:34:49,527 INFO L225 Difference]: With dead ends: 6624 [2023-04-02 06:34:49,527 INFO L226 Difference]: Without dead ends: 6135 [2023-04-02 06:34:49,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:34:49,528 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1094 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:34:49,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1258 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:34:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6135 states. [2023-04-02 06:34:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6135 to 1637. [2023-04-02 06:34:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1633 states have (on average 1.4476423759951011) internal successors, (2364), 1633 states have internal predecessors, (2364), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2367 transitions. [2023-04-02 06:34:50,680 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2367 transitions. Word has length 92 [2023-04-02 06:34:50,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:50,680 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 2367 transitions. [2023-04-02 06:34:50,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:34:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2367 transitions. [2023-04-02 06:34:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:34:50,681 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:50,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:34:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:34:50,681 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:34:50,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1691717530, now seen corresponding path program 1 times [2023-04-02 06:34:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:50,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024153232] [2023-04-02 06:34:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:50,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:34:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024153232] [2023-04-02 06:34:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024153232] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:51,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-02 06:34:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080244102] [2023-04-02 06:34:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:51,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 06:34:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 06:34:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:34:51,853 INFO L87 Difference]: Start difference. First operand 1637 states and 2367 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:04,516 INFO L93 Difference]: Finished difference Result 9968 states and 14631 transitions. [2023-04-02 06:35:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-02 06:35:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2023-04-02 06:35:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:04,527 INFO L225 Difference]: With dead ends: 9968 [2023-04-02 06:35:04,527 INFO L226 Difference]: Without dead ends: 9504 [2023-04-02 06:35:04,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=508, Invalid=2684, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 06:35:04,529 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1766 mSDsluCounter, 6982 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 7484 SdHoareTripleChecker+Invalid, 4406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:04,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 7484 Invalid, 4406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4382 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:35:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9504 states. [2023-04-02 06:35:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9504 to 1650. [2023-04-02 06:35:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1646 states have (on average 1.4459295261239369) internal successors, (2380), 1646 states have internal predecessors, (2380), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2383 transitions. [2023-04-02 06:35:05,940 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2383 transitions. Word has length 93 [2023-04-02 06:35:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:05,940 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2383 transitions. [2023-04-02 06:35:05,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2383 transitions. [2023-04-02 06:35:05,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:35:05,941 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:05,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:05,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:35:05,941 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:05,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1440372789, now seen corresponding path program 1 times [2023-04-02 06:35:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790489050] [2023-04-02 06:35:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:06,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:06,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790489050] [2023-04-02 06:35:06,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790489050] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:06,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:06,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:35:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974157486] [2023-04-02 06:35:06,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:06,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:35:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:06,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:35:06,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:35:06,446 INFO L87 Difference]: Start difference. First operand 1650 states and 2383 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:13,355 INFO L93 Difference]: Finished difference Result 6642 states and 9744 transitions. [2023-04-02 06:35:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:35:13,355 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2023-04-02 06:35:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:13,362 INFO L225 Difference]: With dead ends: 6642 [2023-04-02 06:35:13,362 INFO L226 Difference]: Without dead ends: 6160 [2023-04-02 06:35:13,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:35:13,363 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1109 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:13,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1827 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:35:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2023-04-02 06:35:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 1620. [2023-04-02 06:35:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1616 states have (on average 1.4492574257425743) internal successors, (2342), 1616 states have internal predecessors, (2342), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2345 transitions. [2023-04-02 06:35:14,786 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2345 transitions. Word has length 93 [2023-04-02 06:35:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:14,786 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2345 transitions. [2023-04-02 06:35:14,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:14,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2345 transitions. [2023-04-02 06:35:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:35:14,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:14,787 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:14,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:35:14,787 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:14,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:14,788 INFO L85 PathProgramCache]: Analyzing trace with hash -405753473, now seen corresponding path program 1 times [2023-04-02 06:35:14,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:14,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288925045] [2023-04-02 06:35:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:14,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:14,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288925045] [2023-04-02 06:35:14,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288925045] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:14,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:14,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:35:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957898311] [2023-04-02 06:35:14,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:14,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:14,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:14,968 INFO L87 Difference]: Start difference. First operand 1620 states and 2345 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:23,060 INFO L93 Difference]: Finished difference Result 9328 states and 13689 transitions. [2023-04-02 06:35:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:35:23,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-02 06:35:23,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:23,069 INFO L225 Difference]: With dead ends: 9328 [2023-04-02 06:35:23,069 INFO L226 Difference]: Without dead ends: 7830 [2023-04-02 06:35:23,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:35:23,071 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1177 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:23,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 460 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:35:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7830 states. [2023-04-02 06:35:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 3376. [2023-04-02 06:35:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 3372 states have (on average 1.458185053380783) internal successors, (4917), 3372 states have internal predecessors, (4917), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4920 transitions. [2023-04-02 06:35:26,029 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4920 transitions. Word has length 121 [2023-04-02 06:35:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:26,029 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4920 transitions. [2023-04-02 06:35:26,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4920 transitions. [2023-04-02 06:35:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:35:26,031 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:26,031 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:26,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:35:26,032 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:26,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:26,032 INFO L85 PathProgramCache]: Analyzing trace with hash 98927499, now seen corresponding path program 1 times [2023-04-02 06:35:26,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:26,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894602208] [2023-04-02 06:35:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:26,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:26,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:26,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894602208] [2023-04-02 06:35:26,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894602208] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:26,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:26,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:35:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459211663] [2023-04-02 06:35:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:26,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:26,224 INFO L87 Difference]: Start difference. First operand 3376 states and 4920 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:35:41,265 INFO L93 Difference]: Finished difference Result 18784 states and 27500 transitions. [2023-04-02 06:35:41,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:35:41,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-02 06:35:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:35:41,287 INFO L225 Difference]: With dead ends: 18784 [2023-04-02 06:35:41,287 INFO L226 Difference]: Without dead ends: 15530 [2023-04-02 06:35:41,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:35:41,294 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1607 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:35:41,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 361 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:35:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15530 states. [2023-04-02 06:35:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15530 to 7148. [2023-04-02 06:35:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7148 states, 7144 states have (on average 1.4601063829787233) internal successors, (10431), 7144 states have internal predecessors, (10431), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7148 states to 7148 states and 10434 transitions. [2023-04-02 06:35:47,534 INFO L78 Accepts]: Start accepts. Automaton has 7148 states and 10434 transitions. Word has length 121 [2023-04-02 06:35:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:35:47,534 INFO L495 AbstractCegarLoop]: Abstraction has 7148 states and 10434 transitions. [2023-04-02 06:35:47,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:35:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7148 states and 10434 transitions. [2023-04-02 06:35:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:35:47,536 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:35:47,536 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:35:47,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:35:47,537 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:35:47,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:35:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash -699676479, now seen corresponding path program 1 times [2023-04-02 06:35:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:35:47,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563524144] [2023-04-02 06:35:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:35:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:35:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:47,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:35:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:35:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:35:47,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:35:47,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563524144] [2023-04-02 06:35:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563524144] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:35:47,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:35:47,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:35:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122509620] [2023-04-02 06:35:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:35:47,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:35:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:35:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:35:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:35:47,728 INFO L87 Difference]: Start difference. First operand 7148 states and 10434 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:36:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:36:16,789 INFO L93 Difference]: Finished difference Result 37956 states and 55382 transitions. [2023-04-02 06:36:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:36:16,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-02 06:36:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:36:16,835 INFO L225 Difference]: With dead ends: 37956 [2023-04-02 06:36:16,835 INFO L226 Difference]: Without dead ends: 30930 [2023-04-02 06:36:16,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:36:16,854 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1440 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:36:16,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 365 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:36:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30930 states. [2023-04-02 06:36:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30930 to 15212. [2023-04-02 06:36:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15212 states, 15208 states have (on average 1.458903208837454) internal successors, (22187), 15208 states have internal predecessors, (22187), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:36:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15212 states to 15212 states and 22190 transitions. [2023-04-02 06:36:30,425 INFO L78 Accepts]: Start accepts. Automaton has 15212 states and 22190 transitions. Word has length 121 [2023-04-02 06:36:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:36:30,426 INFO L495 AbstractCegarLoop]: Abstraction has 15212 states and 22190 transitions. [2023-04-02 06:36:30,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:36:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 15212 states and 22190 transitions. [2023-04-02 06:36:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-02 06:36:30,427 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:36:30,428 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:36:30,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:36:30,428 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:36:30,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:36:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -190908345, now seen corresponding path program 1 times [2023-04-02 06:36:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:36:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580731211] [2023-04-02 06:36:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:36:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:36:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:36:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:36:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:36:30,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:36:30,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580731211] [2023-04-02 06:36:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580731211] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:36:30,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:36:30,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:36:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146651813] [2023-04-02 06:36:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:36:30,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:36:30,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:36:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:36:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:36:30,610 INFO L87 Difference]: Start difference. First operand 15212 states and 22190 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:37:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:37:27,573 INFO L93 Difference]: Finished difference Result 76820 states and 111666 transitions. [2023-04-02 06:37:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:37:27,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-02 06:37:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:37:27,669 INFO L225 Difference]: With dead ends: 76820 [2023-04-02 06:37:27,669 INFO L226 Difference]: Without dead ends: 61730 [2023-04-02 06:37:27,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:37:27,696 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1266 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:37:27,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 371 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:37:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61730 states.